Provided by: procmail_3.22-26_amd64 
NAME
procmailex - procmail rcfile examples
SYNOPSIS
$HOME/.procmailrc examples
DESCRIPTION
For a description of the rcfile format see procmailrc(5).
The weighted scoring technique is described in detail in the procmailsc(5) man page.
This man page shows several example recipes. For examples of complete rcfiles you can
check the NOTES section in procmail(1), or look at the example rcfiles in
/usr/share/doc/procmail/examples.
EXAMPLES
Sort out all mail coming from the scuba-dive mailing list into the mailfolder scubafile
(uses the locallockfile scubafile.lock).
:0:
* ^TOscuba
scubafile
Forward all mail from peter about compilers to william (and keep a copy of it here in
petcompil).
:0
* ^From.*peter
* ^Subject:.*compilers
{
:0 c
! william@somewhere.edu
:0
petcompil
}
An equivalent solution that accomplishes the same:
:0 c
* ^From.*peter
* ^Subject:.*compilers
! william@somewhere.edu
:0 A
petcompil
An equivalent, but slightly slower solution that accomplishes the same:
:0 c
* ^From.*peter
* ^Subject:.*compilers
! william@somewhere.edu
:0
* ^From.*peter
* ^Subject:.*compilers
petcompil
If you are fairly new to procmail and plan to experiment a little bit it often helps to
have a safety net of some sort. Inserting the following two recipes above all other
recipes will make sure that of all arriving mail always the last 32 messages will be
preserved. In order for it to work as intended, you have to create a directory named
`backup' in $MAILDIR prior to inserting these two recipes.
:0 c
backup
:0 ic
| cd backup && rm -f dummy `ls -t msg.* | sed -e 1,32d`
If your system doesn't generate or generates incorrect leading `From ' lines on every
mail, you can fix this by calling up procmail with the -f- option. To fix the same
problem by different means, you could have inserted the following two recipes above all
other recipes in your rcfile. They will filter the header of any mail through formail
which will strip any leading `From ', and automatically regenerates it subsequently.
:0 fhw
| formail -I "From " -a "From "
Add the headers of all messages that didn't come from the postmaster to your private
header collection (for statistics or mail debugging); and use the lockfile `headc.lock'.
In order to make sure the lockfile is not removed until the pipe has finished, you have to
specify option `w'; otherwise the lockfile would be removed as soon as the pipe has
accepted the mail.
:0 hwc:
* !^FROM_MAILER
| uncompress headc.Z; cat >>headc; compress headc
Or, if you would use the more efficient gzip instead of compress:
:0 hwc:
* !^FROM_MAILER
| gzip >>headc.gz
Forward all mails shorter than 1000 bytes to my home address (no lockfile needed on this
recipe).
:0
* < 1000
! myname@home
Split up incoming digests from the surfing mailing list into their individual messages,
and store them into surfing, using surfing.lock as the locallockfile.
:0:
* ^Subject:.*surfing.*Digest
| formail +1 -ds >>surfing
Store everything coming from the postmaster or mailer-daemon (like bounced mail) into the
file postm, using postm.lock as the locallockfile.
:0:
* ^FROM_MAILER
postm
A simple autoreply recipe. It makes sure that neither mail from any daemon (like bouncing
mail or mail from mailing-lists), nor autoreplies coming from yourself will be autoreplied
to. If this precaution would not be taken, disaster could result (`ringing' mail). In
order for this recipe to autoreply to all the incoming mail, you should of course insert
it before all other recipes in your rcfile. However, it is advisable to put it after any
recipes that process the mails from subscribed mailinglists; it generally is not a good
idea to generate autoreplies to mailinglists (yes, the !^FROM_DAEMON regexp should already
catch those, but if the mailinglist doesn't follow accepted conventions, this might not be
enough).
:0 h c
* !^FROM_DAEMON
* !^X-Loop: your@own.mail.address
| (formail -r -I"Precedence: junk" \
-A"X-Loop: your@own.mail.address" ; \
echo "Mail received.") | $SENDMAIL -t
A more complicated autoreply recipe that implements the functional equivalent of the well
known vacation(1) program. This recipe is based on the same principles as the last one
(prevent `ringing' mail). In addition to that however, it maintains a vacation database
by extracting the name of the sender and inserting it in the vacation.cache file if the
name was new (the vacation.cache file is maintained by formail which will make sure that
it always contains the most recent names, the size of the file is limited to a maximum of
approximately 8192 bytes). If the name was new, an autoreply will be sent.
As you can see, the following recipe has comments between the conditions. This is
allowed. Do not put comments on the same line as a condition though.
SHELL=/bin/sh # for other shells, this might need adjustment
:0 Whc: vacation.lock
# Perform a quick check to see if the mail was addressed to us
* $^To:.*\<$\LOGNAME\>
# Don't reply to daemons and mailinglists
* !^FROM_DAEMON
# Mail loops are evil
* !^X-Loop: your@own.mail.address
| formail -rD 8192 vacation.cache
:0 ehc # if the name was not in the cache
| (formail -rI"Precedence: junk" \
-A"X-Loop: your@own.mail.address" ; \
echo "I received your mail,"; \
echo "but I won't be back until Monday."; \
echo "-- "; cat $HOME/.signature \
) | $SENDMAIL -oi -t
Store all messages concerning TeX in separate, unique filenames, in a directory named
texmail (this directory has to exist); there is no need to use lockfiles in this case, so
we won't.
:0
* (^TO|^Subject:.*)TeX[^t]
texmail
The same as above, except now we store the mails in numbered files (MH mail folder).
:0
* (^TO|^Subject:.*)TeX[^t]
texmail/.
Or you could file the mail in several directory folders at the same time. The following
recipe will deliver the mail to two MH-folders and one directory folder. It is actually
only one file with two extra hardlinks.
:0
* (^TO|^Subject:.*)TeX[^t]
texmail/. wordprocessing dtp/.
Store all the messages about meetings in a folder that is in a directory that changes
every month. E.g. if it were January 1994, the folder would have the name `94-01/meeting'
and the locallockfile would be `94-01/meeting.lock'.
:0:
* meeting
`date +%y-%m`/meeting
The same as above, but, if the `94-01' directory wouldn't have existed, it is created
automatically:
MONTHFOLDER=`date +%y-%m`
:0 Wic
* ? test ! -d $MONTHFOLDER
| mkdir $MONTHFOLDER
:0:
* meeting
${MONTHFOLDER}/meeting
The same as above, but now by slightly different means:
MONTHFOLDER=`date +%y-%m`
DUMMY=`test -d $MONTHFOLDER || mkdir $MONTHFOLDER`
:0:
* meeting
${MONTHFOLDER}/meeting
If you are subscribed to several mailinglists and people cross-post to some of them, you
usually receive several duplicate mails (one from every list). The following simple
recipe eliminates duplicate mails. It tells formail to keep an 8KB cache file in which it
will store the Message-IDs of the most recent mails you received. Since Message-IDs are
guaranteed to be unique for every new mail, they are ideally suited to weed out duplicate
mails. Simply put the following recipe at the top of your rcfile, and no duplicate mail
will get past it.
:0 Wh: msgid.lock
| formail -D 8192 msgid.cache
Beware if you have delivery problems in recipes below this one and procmail tries to
requeue the mail, then on the next queue run, this mail will be considered a duplicate and
will be thrown away. For those not quite so confident in their own scripting
capabilities, you can use the following recipe instead. It puts duplicates in a separate
folder instead of throwing them away. It is up to you to periodically empty the folder of
course.
:0 Whc: msgid.lock
| formail -D 8192 msgid.cache
:0 a:
duplicates
Procmail can deliver to MH folders directly, but, it does not update the unseen sequences
the real MH manages. If you want procmail to update those as well, use a recipe like the
following which will file everything that contains the word spam in the body of the mail
into an MH folder called spamfold. Note the local lockfile, which is needed because MH
programs do not lock the sequences file. Asynchronous invocations of MH programs that
change the sequences file may therefore corrupt it or silently lose changes.
Unfortunately, the lockfile doesn't completely solve the problem as rcvstore could be
invoked while `show' or `mark' or some other MH program is running. This problem is
expected to be fixed in some future version of MH, but until then, you'll have to balance
the risk of lost or corrupt sequences against the benefits of the unseen sequence.
:0 :spamfold/$LOCKEXT
* B ?? spam
| rcvstore +spamfold
When delivering to emacs folders (i.e., mailfolders managed by any emacs mail package,
e.g., RMAIL or VM) directly, you should use emacs-compatible lockfiles. The emacs mailers
are a bit braindamaged in that respect, they get very upset if someone delivers to
mailfolders which they already have in their internal buffers. The following recipe
assumes that $HOME equals /home/john.
MAILDIR=Mail
:0:/usr/local/lib/emacs/lock/!home!john!Mail!mailbox
* ^Subject:.*whatever
mailbox
Alternatively, you can have procmail deliver into its own set of mailboxes, which you then
periodically empty and copy over to your emacs files using movemail. Movemail uses
mailbox.lock local lockfiles per mailbox. This actually is the preferred mode of
operation in conjunction with procmail.
To extract certain headers from a mail and put them into environment variables you can use
any of the following constructs:
SUBJECT=`formail -xSubject:` # regular field
FROM=`formail -rt -xTo:` # special case
:0 h # alternate method
KEYWORDS=| formail -xKeywords:
If you are using temporary files in a procmailrc file, and want to make sure that they are
removed just before procmail exits, you could use something along the lines of:
TEMPORARY=$HOME/tmp/pmail.$$
TRAP="/bin/rm -f $TEMPORARY"
The TRAP keyword can also be used to change the exitcode of procmail. I.e. if you want
procmail to return an exitcode of `1' instead of its regular exitcodes, you could use:
EXITCODE=""
TRAP="exit 1;" # The trailing semi-colon is important
# since exit is not a standalone program
Or, if the exitcode does not need to depend on the programs run from the TRAP, you can use
a mere:
EXITCODE=1
The following recipe prints every incoming mail that looks like a postscript file.
:0 Bb
* ^^%!
| lpr
The following recipe does the same, but is a bit more selective. It only prints the
postscript file if it comes from the print-server. The first condition matches only if it
is found in the header. The second condition only matches at the start of the body.
:0 b
* ^From[ :].*print-server
* B ?? ^^%!
| lpr
The same as above, but now by slightly different means:
:0
* ^From[ :].*print-server
{
:0 B b
* ^^%!
| lpr
}
Likewise:
:0 HB b
* ^^(.+$)*From[ :].*print-server
* ^^(.+$)*^%!
| lpr
Suppose you have two accounts, you use both accounts regularly, but they are in very
distinct places (i.e., you can only read mail that arrived at either one of the accounts).
You would like to forward mail arriving at account one to account two, and the other way
around. The first thing that comes to mind is using .forward files at both sites; this
won't work of course, since you will be creating a mail loop. This mail loop can be
avoided by inserting the following recipe in front of all other recipes in the
$HOME/.procmailrc files on both sites. If you make sure that you add the same X-Loop:
field at both sites, mail can now safely be forwarded to the other account from either of
them.
:0 c
* !^X-Loop: yourname@your.main.mail.address
| formail -A "X-Loop: yourname@your.main.mail.address" | \
$SENDMAIL -oi yourname@the.other.account
If someone sends you a mail with the word `retrieve' in the subject, the following will
automatically send back the contents of info_file to the sender. Like in all recipes
where we send mail, we watch out for mail loops.
:0
* !^From +YOUR_USERNAME
* !^Subject:.*Re:
* !^FROM_DAEMON
* ^Subject:.*retrieve
| (formail -r ; cat info_file) | $SENDMAIL -oi -t
Now follows an example for a very simple fileserver accessible by mail. For more
demanding applications, I suggest you take a look at SmartList (available from the same
place as the procmail distribution). As listed, this fileserver sends back at most one
file per request, it ignores the body of incoming mails, the Subject: line has to look
like "Subject: send file the_file_you_want" (the blanks are significant), it does not
return files that have names starting with a dot, nor does it allow files to be retrieved
that are outside the fileserver directory tree (if you decide to munge this example, make
sure you do not inadvertently loosen this last restriction).
:0
* ^Subject: send file [0-9a-z]
* !^X-Loop: yourname@your.main.mail.address
* !^Subject:.*Re:
* !^FROM_DAEMON
* !^Subject: send file .*[/.]\.
{
MAILDIR=$HOME/fileserver # chdir to the fileserver directory
:0 fhw # reverse mailheader and extract name
* ^Subject: send file \/[^ ]*
| formail -rA "X-Loop: yourname@your.main.mail.address"
FILE="$MATCH" # the requested filename
:0 ah
| cat - ./$FILE 2>&1 | $SENDMAIL -oi -t
}
The following example preconverts all plain-text mail arriving in certain encoded MIME
formats into a more compact 8-bit format which can be used and displayed more easily by
most programs. The mimencode(1) program is part of Nathaniel Borenstein's metamail
package.
:0
* ^Content-Type: *text/plain
{
:0 fbw
* ^Content-Transfer-Encoding: *quoted-printable
| mimencode -u -q
:0 Afhw
| formail -I "Content-Transfer-Encoding: 8bit"
:0 fbw
* ^Content-Transfer-Encoding: *base64
| mimencode -u -b
:0 Afhw
| formail -I "Content-Transfer-Encoding: 8bit"
}
The following one is rather exotic, but it only serves to demonstrate a feature. Suppose
you have a file in your HOME directory called ".urgent", and the (one) person named in
that file is the sender of an incoming mail, you'd like that mail to be stored in
$MAILDIR/urgent instead of in any of the normal mailfolders it would have been sorted in.
Then this is what you could do (beware, the filelength of $HOME/.urgent should be well
below $LINEBUF, increase LINEBUF if necessary):
URGMATCH=`cat $HOME/.urgent`
:0:
* $^From.*${URGMATCH}
urgent
An entirely different application for procmail would be to conditionally apply filters to
a certain (outgoing) text or mail. A typical example would be a filter through which you
pipe all outgoing mail, in order to make sure that it will be MIME encoded only if it
needs to be. I.e. in this case you could start procmail in the middle of a pipe like:
cat newtext | procmail ./mimeconvert | mail chris@where.ever
The mimeconvert rcfile could contain something like (the =0x80= and =0xff= should be
substituted with the real 8-bit characters):
DEFAULT=| # pipe to stdout instead of
# delivering mail as usual
:0 Bfbw
* [=0x80=-=0xff=]
| mimencode -q
:0 Afhw
| formail -I 'MIME-Version: 1.0' \
-I 'Content-Type: text/plain; charset=ISO-8859-1' \
-I 'Content-Transfer-Encoding: quoted-printable'
SEE ALSO
procmail(1), procmailrc(5), procmailsc(5), sh(1), csh(1), mail(1), mailx(1), uucp(1),
aliases(5), sendmail(8), egrep(1), grep(1), biff(1), comsat(8), mimencode(1), lockfile(1),
formail(1)
AUTHORS
Stephen R. van den Berg
<srb@cuci.nl>
Philip A. Guenther
<guenther@sendmail.com>