procmail forwarding duplicates mails

Hello,

there is a very nice example how to forward mails to external adresses
there: http://pm-doc.sourceforge.net/pm-tips.html

13.11 Service: forward only specific messages

# By Jim Hribnak
# info@1.example.com goes to joe@1.example.com
# info@2.example.com foes to fred@2.example.com

:0
* ^TO_()info@1.example.com\>
{
FORWARDTO = "$FORWARDTO joe@1.example.com"
}

:0
* ^TO_()info@2.example.com\>
{
FORWARDTO = "$FORWARDTO fred@2.example.com"
}

:0 fhw
* FORWARDTO ?? @
* ! ^$MYXLOOP
| $FORMAIL -A "$MYXLOOP"

:0 a
! $FORWARDTO

My question is:
Now if send an email addressed to both info@1.example.com and
info@2.example.com then each of them will get it twice. In my configuration
I switched both adresses in example.com's virtusertable to the linux user
in whose account I can let process procmail so that I can do other
additional things which procmail can. So I sent one mail but procmail got
it twice to process for each of the adresses. How can I determine for which
adress procmail is processing?

Thanks for ideas.

Re: procmail forwarding duplicates mails

Marko Faldix wrote:
> Hello,
> [snip]
>
> My question is:
> Now if send an email addressed to both info@1.example.com and
> info@2.example.com then each of them will get it twice.

As a guess:

This strikes me as a case where you might have an email alias set up in
sendmail "/etc/aliases" that is expanding to multiple recipients. If you
are running your recipe out of "/etc/procmailrc" then each instance of
the expansion would have sendmail calling /etc/procmailrc which
depending on the interaction between sendmail and procmail can result in
multiple copies of the same message delivered to an inbox.

To be sure about this, more information is needed about your particular
setup.

I've been able to duplicate this scenario under other circumstances in
the past.

> In my configuration
> I switched both adresses in example.com's virtusertable to the linux user
> in whose account I can let process procmail so that I can do other
> additional things which procmail can. So I sent one mail but procmail got
> it twice to process for each of the adresses. How can I determine for which
> adress procmail is processing?

Suggestion: Add the following to your procmail recipe to dump the
following procmail variables:

NL="
"

LOG="[$$]$_: LOGNAME=${LOGNAME} HOST=${HOST}${NL}"

Then examine your procmail log file after it processes and email,
provided you setup a logfile for procmail use.

This will at least log the information in the procmail log showing the
active user at the time the recipe is run.

If you are running the recipe out of /etc/procmailrc that may be root,
or if procmail has dropped privileges it may be that of the recipients
username, or it may be some other system user name used when handling
email if not root.

If you are running the recipe out of ${HOME}/.procmailrc then the
LOGNAME should be that of the user.

--
Garen

Re: procmail forwarding duplicates mails

On comp.mail.misc, in <4jc82dF7a0k3U1@individual.net>, "Marko Faldix" wrote:

Correction: Someone who sometimes calls himself "Marko Faldix",
wrote:

> Path: text.usenetserver.com!atl-c01.usenetserver.com!news.usenetse rver.com!news2.euro.net!newsfeed.freenet.de!news.tu-darmstad t.de!fu-berlin.de!uni-berlin.de!individual.net!not-for-mail
> From: Marko Faldix

http://groups.google.com/advanced_group_search
Marko Faldix
Results 1 - 3 of 3 posts in the last year
1 comp.mail.misc
2 oecher.computer

Only three posts ever! Welcome to the Usenet!



You have a German email address? So could anyone.

Can you even find Germany on a map?

> Newsgroups: comp.mail.misc
> Subject: procmail forwarding duplicates mails

FAQ. But trolls don't like homework. They don't have time to
search:

http://groups.google.com/advanced_group_search

for the answers to FAQs on a newsgroup.

Too busy running their mouths under scores of aliases on
hundreds of newsgroups.

> Date: Wed, 02 Aug 2006 20:08:03 +0200
> Lines: 41
> Message-ID: <4jc82dF7a0k3U1@individual.net>
> Mime-Version: 1.0
> Content-Type: text/plain; charset=us-ascii
> Content-Transfer-Encoding: 7Bit
> X-Trace: individual.net aK4Cb7mUkgDty35cmVribwvp+hDOjun7SlN8lFd1PElo4Jb4D9

Only Usenet pros use individual.net. And trolls love it because
there are no identifiers in the headers usable by ordinary
Usenetrs.

Which makes it very easy to create new sockpuppets...

> User-Agent: KNode/0.7.7

You are running Linux and a sophisticated newsreader.

> Xref: usenetserver.com comp.mail.misc:160055
> X-Received-Date: Wed, 02 Aug 2006 14:09:18 EDT (text.usenetserver.com)