[Mailman-Users] User unknown messages

Darren G Pifer dpifer at odu.edu
Fri Jan 6 18:25:18 CET 2006

I want to include some more information that may help try to figure
this out. Mail was sent to one list serve with 19 members, another
list serve that had 32 members was not delivered. BTW, the person
sending the mail is not the list owner that I originally reported but is
a list member. This user does not have the moderate flag set on either
list in membership management. Also, if it matters we are using MM


On Fri, 2006-01-06 at 10:52 -0500, Darren G Pifer wrote:
> Hello,
>       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.
> Darren
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