[Mailman-Users] mail doesn't return

Barry S. Finkel bsfinkel at att.net
Sun May 10 18:06:15 CEST 2015

On 5/10/2015 1:28 AM, Camelia Botez wrote:
> I have a mailing list with a couple of wrong e-mail addresses .
> When I send a message to this mailing list I see in /var/log/maillog
 > of the mailman server that those addresses get user unknown and
 > the messages is not sent , but I don't get back an  error mail
 > with user unknown

Check the bounce values for the list.  IIRC, the default value is 5,
so each bounce (max one per day) is counted against a subscriber.
All bounces are processed by the Mailman bounce process, and only
when a subscriber "achieves" a bounce score at or above the set
maximum is the rejection mail sent to the list owner.

When I ran a Mailman server, I checked the bounce scores on all lists
daily so that I would be able to see which subscribers had bounces,
as many of our lists were re-built automatically from external sources.
I used scripts developed by Mark Sapiro, and he referenced them in a
posting earlier today or yesterday.

--Barry Finkel

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