Public bug reported: I have a Debian 5 (Lenny) server with Postfix - Dovecot and Mailman 2.1.11 and 1700+ users. The problem is when Dovecot returns the bounce message about "Quota exceeded", Mailman don't recognize the format: Your message to <user@domain.com> was automatically rejected: Quota exceeded It's suposed that Mailman recognize this type of message using the VERP feature, I have "recipient_delimiter = +" in Postfix but Mailman don't detect message coming from Dovecot. /var/log/mailman/bounce: Dec 21 10:58:08 2010 (3214) listnews: bounce message w/no discernable addresses: <dovecot-1292944464-47721-0@mail> Dec 21 10:58:08 2010 (3214) noticias: forwarding unrecognized, message-id: <dovecot-1292944464-47721-0@mail> ** Affects: mailman Importance: Undecided Status: New ** Tags: dovecot mailman postfix -- You received this bug notification because you are a member of Mailman Coders, which is subscribed to GNU Mailman. https://bugs.launchpad.net/bugs/693134 Title: Uncaught bounce from Dovecot when Quota Exceeded