[Mailman-Users] User unknown messages

Darren G Pifer dpifer at odu.edu
Fri Jan 6 16:52:02 CET 2006


      One of our list serve admins is trying to send out a bunch of
email to several list serves. He has defined a group in Lotus Notes,
which comprises the different list serves, and when he sends mail to
the group, the mail is not being delivered. The mail logs show that
mail is coming from the list serve but is not being delivered because
of 'user unknown' messages. We use LDAP, specifically OpenLDAP on a
Linux, for our user lookups. The directory is working properly.
Here are a few of the 'user unknown' messages:

Jan  6 10:36:07 sendmail[31936]: 
Jan  6 10:36:07 sendmail[31936]: k06Fa6Cl031936: to=<twa at odu.edu>,
delay=00:00:01, pri=989527, stat=User unknown
[bunches of other addresses come out the same]

Even though LDAP knows about the user:

[dpifer syslog]$ sendmail -bv twa at odu.edu

Terry/OCCS/AF/ODU at notes.odu.edu... deliverable: mailer esmtp, host
notes.odu.edu., user Terry/OCCS/AF/ODU at notes.odu.edu

I can deliver mail to this user okay but the problem is when the
mail comes through mailman. I am not seeing anything in the
mailman or sendmail logs to see any other failures.

Has any one seen this? Are we reaching some threshold causing
this problem? We need to get this mail out today for our list
serve admin.


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