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PROCMAIL(1)                 General Commands Manual                PROCMAIL(1)

NAME
       procmail - autonomous mail processor

SYNOPSIS
       procmail [-ptoY] [-f fromwhom]
            [parameter=value | rcfile] ...
       procmail [-toY] [-f fromwhom] [-a argument] ...
            -d recipient ...
       procmail [-ptY] -m [parameter=value] ...  rcfile
            [argument] ...
       procmail [-toY] [-a  argument] -z
       procmail -v

DESCRIPTION
       For a quick start, see NOTES at the end.

       Procmail  should be invoked automatically over the .forward file mecha-
       nism as soon as mail arrives.  Alternatively, when installed by a  sys-
       tem  administrator,  it  can  be invoked from within the mailer immedi-
       ately.  When invoked, it first sets some environment variables  to  de-
       fault values, reads the mail message from stdin until an EOF, separates
       the body from the header, and then, if no command  line  arguments  are
       present, it starts to look for a file named $HOME/.procmailrc.  Accord-
       ing to the processing recipes in this file, the mail message that  just
       arrived  gets  distributed into the right folder (and more).  If no rc-
       file is found, or processing of the rcfile falls off the end,  procmail
       will store the mail in the default system mailbox.

       If  no rcfiles and no -p have been specified on the command line, proc-
       mail will, prior to reading $HOME/.procmailrc, interpret commands  from
       /etc/procmailrc  (if  present).   Care  must  be  taken  when  creating
       /etc/procmailrc, because, if circumstances permit, it will be  executed
       with  root  privileges  (contrary  to  the  $HOME/.procmailrc  file  of
       course).

       If running suid root or with root privileges, procmail will be able  to
       perform  as a functionally enhanced, backwards compatible mail delivery
       agent.

       Procmail can also be used as a general purpose mail filter, i.e.,  pro-
       visions  have  been  made to enable procmail to be invoked in a special
       sendmail rule.

       The rcfile format is described in detail in the procmailrc(5) man page.

       The weighted scoring technique is described  in  detail  in  the  proc-
       mailsc(5) man page.

       Examples  for  rcfile recipes can be looked up in the procmailex(5) man
       page.

   Signals
       TERMINATE   Terminate prematurely and requeue the mail.

       HANGUP      Terminate prematurely and bounce the mail.

       INTERRUPT   Terminate prematurely and bounce the mail.

       QUIT        Terminate prematurely and silently lose the mail.

       ALARM       Force a timeout (see TIMEOUT).

       USR1        Equivalent to a VERBOSE=off.

       USR2        Equivalent to a VERBOSE=on.

OPTIONS
       -v   Procmail will print its version number, display its  compile  time
            configuration and exit.

       -p   Preserve  any old environment.  Normally procmail clears the envi-
            ronment upon startup, except for the value of TZ.  However, in any
            case: any default values will override any preexisting environment
            variables, i.e., procmail will not pay any attention to any prede-
            fined  environment  variables, it will happily overwrite them with
            its own defaults.  For the  list  of  environment  variables  that
            procmail  will  preset see the procmailrc(5) man page.  If both -p
            and -m are specified, the list  of  preset  environment  variables
            shrinks to just: LOGNAME, HOME, SHELL, ORGMAIL and MAILDIR.

       -t   Make  procmail  fail  softly, i.e., if procmail cannot deliver the
            mail to any of the  destinations  you  gave,  the  mail  will  not
            bounce,  but  will  return to the mailqueue.  Another delivery-at-
            tempt will be made at some time in the future.

       -f fromwhom
            Causes procmail to  regenerate  the  leading  `From  '  line  with
            fromwhom  as the sender (instead of -f one could use the alternate
            and obsolete -r).  If fromwhom consists merely of  a  single  `-',
            then  procmail  will only update the timestamp on the `From ' line
            (if present, if not, it will generate a new one).

       -o   Instead of allowing anyone to generate `From ' lines, simply over-
            ride the fakes.

       -Y   Assume  traditional  Berkeley  mailbox format, ignore any Content-
            Length: fields.

       -a argument
            This will set $1 to be equal to argument.  Each succeeding -a  ar-
            gument will set the next number variable ($2, $3, etc).  It can be
            used to pass meta information along to procmail.   This  is  typi-
            cally  done by passing along the $@x information from the sendmail
            mailer rule.

       -d recipient ...
            This turns on explicit delivery mode, delivery will be to the  lo-
            cal user recipient.  This, of course, only is possible if procmail
            has root privileges (or if procmail is already  running  with  the
            recipient's  euid and egid).  Procmail will setuid to the intended
            recipients and delivers the mail as if it were invoked by the  re-
            cipient  with  no arguments (i.e., if no rcfile is found, delivery
            is like ordinary mail).  This option is incompatible with -p.

       -m   Turns procmail into a general purpose mail filter.  In  this  mode
            one  rcfile  must be specified on the command line.  After the rc-
            file, procmail will accept an unlimited number of  arguments.   If
            the  rcfile  is  an  absolute path starting with /etc/procmailrcs/
            without backward references (i.e. the parent directory  cannot  be
            mentioned)  procmail  will,  only  if  no  security violations are
            found, take on the identity of the owner of the  rcfile  (or  sym-
            bolic  link).   For  some advanced usage of this option you should
            look in the EXAMPLES section below.

       -z   This turns on LMTP mode, wherein procmail acts as an RFC2033  LMTP
            server.   Delivery  takes  place in the same  manner and under the
            same restrictions as the delivery mode enabled  with -d.  This op-
            tion is incompatible with -p and -f.

ARGUMENTS
       Any  arguments containing an '=' are considered to be environment vari-
       able assignments, they will all be evaluated after the  default  values
       have been assigned and before the first rcfile is opened.

       Any  other  arguments are presumed to be rcfile paths (either absolute,
       or if they start with `./' relative to the current directory; any other
       relative  path  is  relative  to  $HOME,  unless the -m option has been
       given, in which case all relative paths are relative to the current di-
       rectory);  procmail  will start with the first one it finds on the com-
       mand line.  The following ones will only be  parsed  if  the  preceding
       ones  have  a not matching HOST-directive entry, or in case they should
       not exist.

       If no rcfiles are specified, it looks for  $HOME/.procmailrc.   If  not
       even  that  can be found, processing will continue according to the de-
       fault settings of the environment variables and the ones  specified  on
       the command line.

EXAMPLES
       Examples  for  rcfile recipes can be looked up in the procmailex(5) man
       page.  A small sample rcfile can be found in the NOTES section below.

       Skip the rest of this EXAMPLES section unless you are a system adminis-
       trator who is vaguely familiar with sendmail.cf syntax.

       The  -m  option is typically used when procmail is called from within a
       rule in the sendmail.cf file.  In order to be able to  do  this  it  is
       convenient  to  create  an  extra `procmail' mailer in your sendmail.cf
       file (in addition to the perhaps already present  `local'  mailer  that
       starts  up  procmail).   To create such a `procmail' mailer I'd suggest
       something like:

              Mprocmail, P=/usr/bin/procmail, F=mSDFMhun, S=11, R=21,
                      A=procmail -m $h $g $u

       This enables you to use rules like the following (most likely in  rule-
       set  0)  to  filter  mail  through the procmail mailer (please note the
       leading tab to continue the rule, and the  tab  to  separate  the  com-
       ments):

              R$*<@some.where>$*
                      $#procmail $@/etc/procmailrcs/some.rc $:$1@some.where.procmail$2
              R$*<@$*.procmail>$*
                      $1<@$2>$3       Already filtered, map back

       And /etc/procmailrcs/some.rc could be as simple as:

              SENDER = "<$1>"                 # fix for empty sender addresses
              SHIFT = 1                       # remove it from $@

              :0                              # sink all junk mail
              * ^Subject:.*junk
              /dev/null

              :0 w                            # pass along all other mail
              ! -oi -f "$SENDER" "$@"

       Do watch out when sending mail from within the /etc/procmailrcs/some.rc
       file, if you send mail to addresses which match the first  rule  again,
       you could be creating an endless mail loop.

FILES
       /etc/passwd            to  set  the recipient's LOGNAME, HOME and SHELL
                              variable defaults

       /var/mail/$LOGNAME     system mailbox; both the system mailbox and  the
                              immediate directory it is in will be created ev-
                              ery time procmail starts and either one  is  not
                              present

       /etc/procmailrc        initial global rcfile

       /etc/procmailrcs/      special privileges path for rcfiles

       $HOME/.procmailrc      default rcfile

       /var/mail/$LOGNAME.lock
                              lockfile  for  the system mailbox (not automati-
                              cally used by procmail, unless  $DEFAULT  equals
                              /var/mail/$LOGNAME and procmail is delivering to
                              $DEFAULT)

       /usr/sbin/sendmail     default mail forwarder

       _????`hostname`        temporary `unique' zero-length files created  by
                              procmail

SEE ALSO
       procmailrc(5), procmailsc(5), procmailex(5), sh(1), csh(1), mail(1),
       mailx(1), uucp(1), aliases(5), sendmail(8), egrep(1), grep(1), biff(1),
       comsat(8), lockfile(1), formail(1), cron(1)

DIAGNOSTICS
       Autoforwarding mailbox found
                              The system mailbox had its suid or sgid bit set,
                              procmail terminates with EX_NOUSER assuming that
                              this mailbox must not be delivered to.

       Bad substitution of "x"
                              Not a valid environment variable name specified.

       Closing brace unexpected
                              There  was no corresponding opening brace (nest-
                              ing block).

       Conflicting options    Not all option combinations are useful

       Conflicting x suppressed
                              Flag x is not compatible with some other flag on
                              this recipe.

       Couldn't create "x"    The   system   mailbox  was  missing  and  could
                              not/will not be created.

       Couldn't create maildir part "x"
                              The maildir folder "x" is missing  one  or  more
                              required  subdirectories  and procmail could not
                              create them.

       Couldn't create or rename temp file "x"
                              An error occurred in the mechanics of   deliver-
                              ing to the directory folder "x".

       Couldn't determine implicit lockfile from "x"
                              There  were no `>>' redirectors to be found, us-
                              ing simply `$LOCKEXT' as locallockfile.

       Couldn't read "x"      Procmail was unable to open an rcfile or it  was
                              not a regular file, or procmail couldn't open an
                              MH directory to find the highest numbered file.

       Couldn't unlock "x"    Lockfile was already gone, or  write  permission
                              to  the directory where the lockfile is has been
                              denied.

       Deadlock attempted on "x"
                              The locallockfile specified on  this  recipe  is
                              equal to a still active $LOCKFILE.

       Denying special privileges for "x"
                              Procmail  will  not  take  on  the identity that
                              comes with the rcfile because a security  viola-
                              tion was found (e.g.  -p or variable assignments
                              on the command line) or  procmail  had  insuffi-
                              cient privileges to do so.

       Descriptor "x" was not open
                              As procmail was started, stdin, stdout or stderr
                              was not connected (possibly an attempt  to  sub-
                              vert security)

       Enforcing stricter permissions on "x"
                              The system mailbox of the recipient was found to
                              be unsecured, procmail secured it.

       Error while writing to "x"
                              Nonexistent subdirectory, no  write  permission,
                              pipe died or disk full.

       Exceeded LINEBUF       Buffer overflow detected, LINEBUF was too small,
                              PROCMAIL_OVERFLOW has been set.

       MAILDIR is not an absolute path

       MAILDIR path too long

       ORGMAIL is not an absolute path

       ORGMAIL path too long

       default rcfile is not an absolute path

       default rcfile path too long
                              The specified item's full path,  when  expanded,
                              was  longer  than LINEBUF or didn't start with a
                              file separator.

       Excessive output quenched from "x"
                              The program or filter "x" tried to  produce  too
                              much  output  for  the current LINEBUF, the rest
                              was discarded  and  PROCMAIL_OVERFLOW  has  been
                              set.

       Extraneous x ignored   The  action  line  or other flags on this recipe
                              makes flag x meaningless.

       Failed forking "x"     Process table is full (and NORESRETRY  has  been
                              exhausted).

       Failed to execute "x"  Program not in path, or not executable.

       Forced unlock denied on "x"
                              No write permission in the directory where lock-
                              file "x" resides, or more than one procmail try-
                              ing to force a lock at exactly the same time.

       Forcing lock on "x"    Lockfile "x" is going to be removed by force be-
                              cause of a timeout (see also: LOCKTIMEOUT).

       Incomplete recipe      The start of a recipe was found, but it stranded
                              in an EOF.

       Insufficient privileges
                              Procmail  either  needs root privileges, or must
                              have the right (e)uid and (e)gid to run  in  de-
                              livery mode.  The mail will bounce.

       Invalid regexp "x"     The regular expression "x" contains errors (most
                              likely some missing or extraneous parens).

       Kernel-lock failed     While trying to use the kernel-supported locking
                              calls,  one of them failed (usually indicates an
                              OS error), procmail ignores this error and  pro-
                              ceeds.

       Kernel-unlock failed   See above.

       Lock failure on "x"    Can  only  occur  if you specify some real weird
                              (and illegal) lockfilenames or if  the  lockfile
                              could  not  be  created  because of insufficient
                              permissions or nonexistent subdirectories.

       Lost "x"               Procmail tried to clone  itself  but  could  not
                              find  back  rcfile "x" (it either got removed or
                              it was a relative path and you changed directory
                              since procmail opened it last time).

       Missing action         The current recipe was found to be incomplete.

       Missing closing brace  A nesting block was started, but never finished.

       Missing name           The -f option needs an extra argument.

       Missing argument       You specified the -a option but forgot the argu-
                              ment.

       Missing rcfile         You specified the -m  option,  procmail  expects
                              the name of an rcfile as argument.

       Missing recipient      You  specified  the -d option or called procmail
                              under a different name, it expects one  or  more
                              recipients as arguments.

       No space left to finish writing "x"
                              The  filesystem  containing  "x"  does  not have
                              enough free space to permit delivery of the mes-
                              sage to the file.

       Out of memory          The  system is out of swap space (and NORESRETRY
                              has been exhausted).

       Processing continued   The unrecognised options on the command line are
                              ignored, proceeding as usual.

       Program failure (nnn) of "x"
                              Program  that  was  started by procmail returned
                              nnn instead of EXIT_SUCCESS (=0); if nnn is neg-
                              ative,  then this is the signal the program died
                              on.

       Quota exceeded while writing "x"
                              The filesize quota  for  the  recipient  on  the
                              filesystem containing "x" does not permit deliv-
                              ering the message to the file.

       Renaming bogus "x" into "x"
                              The system mailbox of the recipient was found to
                              be bogus, procmail performed evasive actions.

       Rescue of unfiltered data succeeded/failed
                              A filter returned unsuccessfully, procmail tried
                              to get back the original text.

       Skipped: "x"           Couldn't do anything  with  "x"  in  the  rcfile
                              (syntax error), ignoring it.

       Suspicious rcfile "x"  The owner of the rcfile was not the recipient or
                              root, the file was world writable, or the direc-
                              tory  that  contained  it was world writable, or
                              this was the default rcfile  ($HOME/.procmailrc)
                              and either it was group writable or the directo-
                              ry that contained it was group writable (the rc-
                              file was not used).

       Terminating prematurely whilst waiting for ...
                              Procmail  received a signal while it was waiting
                              for ...

       Timeout, terminating "x"
                              Timeout has occurred on program or filter "x".

       Timeout, was waiting for "x"
                              Timeout has occurred on program, filter or  file
                              "x".   If  it  was  a program or filter, then it
                              didn't seem to be running anymore.

       Truncated file to former size
                              The file could not be delivered to successfully,
                              so the file was truncated to its former size.

       Truncating "x" and retrying lock
                              "x"  does not seem to be a valid filename or the
                              file is not empty.

       Unable to treat as directory "x"
                              Either the suffix on "x" would indicate that  it
                              should  be  an  MH  or maildir folder, or it was
                              listed as an second folder into which  to  link,
                              but it already exists and is not a directory.

       Unexpected EOL         Missing closing quote, or trying to escape EOF.

       Unknown user "x"       The  specified  recipient does not have a corre-
                              sponding uid.

EXTENDED DIAGNOSTICS
       Extended diagnostics can be turned on and off through setting the  VER-
       BOSE variable.

       [pid] time & date      Procmail's pid and a timestamp.  Generated when-
                              ever procmail logs a diagnostic and at  least  a
                              second has elapsed since the last timestamp.

       Acquiring kernel-lock  Procmail  now  tries to kernel-lock the most re-
                              cently opened file (descriptor).

       Assigning "x"          Environment variable assignment.

       Assuming identity of the recipient, VERBOSE=off
                              Dropping all  privileges  (if  any),  implicitly
                              turns off extended diagnostics.

       Bypassed locking "x"   The  mail  spool directory was not accessible to
                              procmail, it relied solely on kernel locks.

       Executing "x"          Starting program "x".  If it is started by proc-
                              mail  directly  (without an intermediate shell),
                              procmail will show where it separated the  argu-
                              ments by inserting commas.

       HOST mismatched "x"    This  host  was called "x", HOST contained some-
                              thing else.

       Locking "x"            Creating lockfile "x".

       Linking to "x"         Creating a hardlink between directory folders.

       Match on "x"           Condition matched.

       Matched "x"            Assigned "x" to MATCH.

       No match on "x"        Condition didn't match, recipe skipped.

       Non-zero exitcode (nnn) by "x"
                              Program that was started by procmail as a condi-
                              tion  or  as the action of a recipe with the `W'
                              flag returned nnn instead of EXIT_SUCCESS  (=0);
                              the usage indicates that this is not an entirely
                              unexpected condition.

       Notified comsat: "$LOGNAME@offset:file"
                              Sent comsat/biff a notice that mail arrived  for
                              user $LOGNAME at `offset' in `file'.

       Opening "x"            Opening file "x" for appending.

       Rcfile: "x"            Rcfile changed to "x".

       Reiterating kernel-lock
                              While attempting several locking methods, one of
                              these failed.   Procmail  will  reiterate  until
                              they all succeed in rapid succession.

       Score: added newtotal "x"
                              This  condition scored `added' points, which re-
                              sulted in a `newtotal' score.

       Unlocking "x"          Removing lockfile "x" again.

WARNINGS
       You should create a shell script that uses lockfile(1) before  invoking
       your  mail shell on any mailbox file other than the system mailbox (un-
       less of course, your mail shell uses the same lockfiles (local or glob-
       al) you specified in your rcfile).

       In  the unlikely event that you absolutely need to kill procmail before
       it has finished, first try and use the regular kill command (i.e.,  not
       kill  -9,  see  the subsection Signals for suggestions), otherwise some
       lockfiles might not get removed.

       Beware when using the -t option, if procmail repeatedly  is  unable  to
       deliver  the  mail  (e.g.,  due  to  an  incorrect  rcfile), the system
       mailqueue could fill up.  This could aggravate both the local  postmas-
       ter and other users.

       The  /etc/procmailrc file might be executed with root privileges, so be
       very careful of what you put in it.  SHELL will be equal to that of the
       current recipient, so if procmail has to invoke the shell, you'd better
       set it to some safe value first.  See also: DROPPRIVS.

       Keep in mind that if chown(1) is permitted on files  in  /etc/procmail-
       rcs/,  that  they can be chowned to root (or anyone else) by their cur-
       rent owners.  For maximum security, make sure this  directory  is  exe-
       cutable to root only.

       Procmail  is  not  the  proper  tool for sharing one mailbox among many
       users, such as when you have one POP account for all mail to  your  do-
       main.  It  can  be done if you manage to configure your MTA to add some
       headers with the envelope recipient data in order to tell Procmail  who
       a  message is for, but this is usually not the right thing to do.  Per-
       haps you want to investigate if your MTA offers `virtual user  tables',
       or check out the `multidrop' facility of Fetchmail.

BUGS
       After removing a lockfile by force, procmail waits $SUSPEND seconds be-
       fore creating a new lockfile so that another process  that  decides  to
       remove  the  stale  lockfile  will not remove the newly created lock by
       mistake.

       Procmail uses the regular TERMINATE signal  to  terminate  any  runaway
       filter, but it does not check if the filter responds to that signal and
       it only sends it to the filter itself, not to any of the filter's chil-
       dren.

       A continued Content-Length: field is not handled correctly.

MISCELLANEOUS
       If there is an existing Content-Length: field in the header of the mail
       and the -Y option is not specified, procmail will trim the field to re-
       port the correct size.  Procmail does not change the fieldwidth.

       If  there  is no Content-Length: field or the -Y option has been speci-
       fied and procmail appends to regular mailfolders, any lines in the body
       of the message that look like postmarks are prepended with `>' (disarms
       bogus mailheaders).  The regular expression that is used to search  for
       these postmarks is:
              `\nFrom '

       If  the  destination  name  used  in  explicit  delivery mode is not in
       /etc/passwd, procmail will proceed as if explicit delivery mode was not
       in  effect.   If not in explicit delivery mode and should the uid proc-
       mail is running under, have no corresponding  /etc/passwd  entry,  then
       HOME  will  default  to /, LOGNAME will default to #uid, SHELL will de-
       fault to /bin/sh, and ORGMAIL will default to /tmp/dead.letter.

       When in explicit delivery mode, procmail will generate a leading  `From
       '  line  if  none  is present.  If one is already present procmail will
       leave it intact.  If procmail is not invoked with one of the  following
       user  or  group  ids :  root,  daemon, uucp, mail, x400, network, list,
       slist, lists or news, but still has to generate or accept a new `From '
       line,  it will generate an additional `>From ' line to help distinguish
       fake mails.

       For security reasons procmail will only use an absolute or  $HOME-rela-
       tive  rcfile  if  it  is  owned  by  the  recipient  or root, not world
       writable, and the directory it is contained in is not  world  writable.
       The  $HOME/.procmailrc  file has the additional constraint of not being
       group-writable or in a group-writable directory.

       If /var/mail/$LOGNAME is a bogus mailbox (i.e., does not belong to  the
       recipient,  is unwritable, is a symbolic link or is a hard link), proc-
       mail will upon startup try to rename it into a file starting with  `BO-
       GUS.$LOGNAME.' and ending in an inode-sequence-code.  If this turns out
       to be impossible, ORGMAIL will have no initial value,  and  hence  will
       inhibit delivery without a proper rcfile.

       If /var/mail/$LOGNAME already is a valid mailbox, but has got too loose
       permissions on it, procmail will correct  this.   To  prevent  procmail
       from doing this make sure the u+x bit is set.

       When  delivering  to  directories,  MH folders, or maildir folders, you
       don't need to use lockfiles to  prevent  several  concurrently  running
       procmail programs from messing up.

       Delivering  to MH folders is slightly more time consuming than deliver-
       ing to normal directories or mailboxes, because procmail has to  search
       for  the  next available number (instead of having the filename immedi-
       ately available).

       On general failure procmail will return EX_CANTCREAT, unless option  -t
       is specified, in which case it will return EX_TEMPFAIL.

       To  make  `egrepping' of headers more consistent, procmail concatenates
       all continued header fields; but only internally.  When delivering  the
       mail, line breaks will appear as before.

       If  procmail is called under a name not starting with `procmail' (e.g.,
       if it is linked to another name and invoked as such), it  comes  up  in
       explicit  delivery  mode,  and expects the recipients' names as command
       line arguments (as if -d had been specified).

       Comsat/biff notifications are done using udp.  They are sent  off  once
       when  procmail  generates  the regular logfile entry.  The notification
       messages have the following extended format (or as close as you can get
       when final delivery was not to a file):
              $LOGNAME@offset_of_message_in_mailbox:absolute_path_to_mailbox

       Whenever  procmail  itself  opens a file to deliver to, it consistently
       uses the following kernel locking strategies: fcntl(2).

       Procmail is NFS-resistant and eight-bit clean.

NOTES
       Calling up procmail with the -h or -? options will cause it to  display
       a command-line help and recipe flag quick-reference page.

       There exists an excellent newbie FAQ about mailfilters (and procmail in
       particular); it is maintained by Nancy McGough <nancym@ii.com> and  can
       be obtained by sending a mail to mail-server@rtfm.mit.edu with the fol-
       lowing in the body:
              send usenet/news.answers/mail/filtering-faq

       If procmail is not installed globally  as  the  default  mail  delivery
       agent  (ask your system administrator), you have to make sure it is in-
       voked when your mail arrives.  In this case  your  $HOME/.forward  (be-
       ware,  it has to be world readable) file should contain the line below.
       Be sure to include the single and double quotes, and  unless  you  know
       your  site to be running smrsh (the SendMail Restricted SHell), it must
       be an absolute path.

       "|exec /usr/bin/procmail"

       Some mailers (notably exim) do not currently accept the  above  syntax.
       In such case use this instead:

       |/usr/bin/procmail

       Procmail  can  also  be invoked to postprocess an already filled system
       mailbox.  This can be useful if you  don't  want  to  or  can't  use  a
       $HOME/.forward  file (in which case the following script could periodi-
       cally be called from within cron(1),  or  whenever  you  start  reading
       mail):

              #!/bin/sh

              ORGMAIL=/var/mail/$LOGNAME

              if cd $HOME &&
               test -s $ORGMAIL &&
               lockfile -r0 -l1024 .newmail.lock 2>/dev/null
              then
                trap "rm -f .newmail.lock" 1 2 3 13 15
                umask 077
                lockfile -l1024 -ml
                cat $ORGMAIL >>.newmail &&
                 cat /dev/null >$ORGMAIL
                lockfile -mu
                formail -s procmail <.newmail &&
                 rm -f .newmail
                rm -f .newmail.lock
              fi
              exit 0

   A sample small $HOME/.procmailrc:
       PATH=/usr/local/bin:/usr/bin:/bin
       MAILDIR=$HOME/Mail      #you'd better make sure it exists
       DEFAULT=$MAILDIR/mbox   #completely optional
       LOGFILE=$MAILDIR/from   #recommended

       :0:
       * ^From.*berg
       from_me

       :0
       * ^Subject:.*Flame
       /dev/null

       Other examples for rcfile recipes can be looked up in the procmailex(5)
       man page.

SOURCE
       This program is part of the  procmail  mail-processing-package  (v3.22)
       available  at http://www.procmail.org/ or ftp.procmail.org in pub/proc-
       mail/.

MAILINGLIST
       There exists a mailinglist for questions relating to any program in the
       procmail package:
              <procmail-users@procmail.org>
                     for submitting questions/answers.
              <procmail-users-request@procmail.org>
                     for subscription requests.

       If  you  would  like  to  stay informed about new versions and official
       patches send a subscription request to
              procmail-announce-request@procmail.org
       (this is a readonly list).

AUTHORS
       Stephen R. van den Berg
              <srb@cuci.nl>
       Philip A. Guenther
              <guenther@sendmail.com>

BuGless                           2001/08/27                       PROCMAIL(1)

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