Problems posting to lists

[Dan White]

On 10/25/12 16:46 -0200, Rodrigo Abrantes Antunes wrote:
>Hi, I'm using mailman to post to a list but some users don't receive the
>messages, when I post to the list I see this in mail.log for one of the
>members of the list that didn't receive the message:
>
> Oct 25 08:20:33 srv-mail-pel cyrus/lmtp[14548]: dupelim: eliminated
>duplicate message to user.rodrigoantunes id
><20121025081521.Horde.NWZiHUv4Cn9QiRE5nCOzRSA at webmail.pelotas.ifsul.edu.br>
>(delivery)
> Oct 25 08:20:33 srv-mail-pel cyrus/lmtp[14548]: duplicate_mark:
><20121025081521.Horde.NWZiHUv4Cn9QiRE5nCOzRSA at webmail.pelotas.ifsul.edu.br>
>.rodrigoantunes+ at .sieve. 1351160433 0
>
> Here is what mailman's people said:
>
> "This message was delivered from Mailman to Postfix and then delivered by
>Postfix to Cyrus, possibly because this was to a local user and Cyrus is
>acting as the LDA, or possibly for some other reason, but in any case, if
>the mail wasn't delivered to the user, this is a question for Cyrus."

The log entry above is a message from cyrus reporting that it failed to
deliver a message because it considered it a duplicate message. You could
temporarily disable duplicatesuppression to see if that's the issue.

-- 
Dan White