The issue was that as of 12.04 ubuntu upgraded to ipv6 support. My mailman install required relaying of mails by postfix but because the system was now ipv6 enabled, this was not possible until add following to mynetworks [::1]/128 Thanks to Mark Sapiro on the mailman list for persisting and finding the answer.
Maybe this will save someone else the time that it cost me.
Is the cause of this type of issue my ignorance alone? Why (else) do these things happen?
-- Best regards, Eric Smith
Scott Kitterman wrote on Wed-25-Jul 12 9:07PM
On Wednesday, July 25, 2012 08:55:52 PM Eric Smith wrote:
Thanks Robert (Scott)
I have upgraded, checked and followed the Ubuntu docs. transport in master.cf corrected (I had a typo that gave the error with the user expansion), now it is like this;
[root@pepper ~] $ grep -A1 mailman /etc/postfix/master.cf mailman unix - n n - - pipe flags=FR user=list argv=/usr/lib/mailman/bin/postfix-to-mailman.py ${nexthop} ${user}
$ mutt fresher@fresher2.nl -stest</dev/null;sleep 2;
sudo sh -c "find /var/log/ -mmin -1; grep fresher /var/log/mail.log|tail -1" /var/log/syslog /var/log/mail.log /var/log/auth.log Jul 25 20:45:53 localhost postfix/local[10429]: 70E4329020F:
to=<|/var/lib/mailman/mail/mailman post fresher@fruitcom.com>,
orig_to=<fresher@fresher2.nl>, relay=local, delay=0.17,
delays=0.11/0/0/0.06, dsn=5.1.1, status=bounced (unknown user:
"|/var/lib/mailman/mail/mailman post fresher")FWIW: [eric@pepper ~] $ echo $HOSTNAME pepper.fruitcom.com
(Tooth enamel wearing a bit thin)
Any ideas where I could look?
I've never used mailman, so I don't know for sure about this, but I note you're using "user=list" in the flags for the mailman service, but I see "/var/lib/mailman/mail/mailman post fresher" in the logs. Is fresher a valid address in your domain?
Scott K