The mailing list for listmasters using Sympa

[Wolfgang Zeikat <address@concealed>]

In an older episode, on 2013-03-11 21:54, Isaac Freeman wrote:
> In case it helps, this is what I'm seeing in the logs:
>
> Mar 11 16:51:30 mx2 sympa[9404]: main::DoFile() Processing 
> /address@concealed ; 
> sender: address@concealed (Mail Delivery System)#012 ; 
> message-id: <address@concealed>#012
> Mar 11 16:51:30 mx2 sympa[9404]: main::DoFile() Ignoring message which 
> would cause a loop
> Mar 11 16:51:30 mx2 sympa[9404]: Moving bad file 
> address@concealed to bad/
>
> I can't figure out a way to get it to accept the message and send it to 
> the list...

We have worked around that problem by changing the bounce messages' 
"From:" header line in our MTA (postfix) before the mail is passed to 
sympa. We apply this only to certain list addresses where the reception 
of bounce message is explicitly wanted.

Details:

In postfix' main.cf:

smtpd_restriction_classes =
 bounces_allowed

bounces_allowed =
  check_recipient_access regexp:/etc/postfix/regexp.recipient_rules


In /etc/postfix/regexp.recipient_rules:

# Recipients with special treatment
/^address@concealed$/ FILTER bounceme:[127.0.0.1]

In postfix' master.cf:

bounceme        unix  -       n       n       -       -       pipe
    user=sympa argv=/etc/postfix/change-fromheader.sh ${recipient}

In /etc/postfix/change-fromheader.sh:
#!/bin/bash
RECIPIENT="$1"

perl -pe 
's/^(From:.*)(mailer-daemon[@]\S*[a-z]+\b)(.*)/${1}something\@ourdoma.in${3}/i' 
|/opt/products/sympa/5.1.2/bin/queue  $RECIPIENT

logger -p mail.info -t bounceme "Processed message for $RECIPIENT"


Hope this helps,

wolfgang