Since i upgraded my multiserver instance to 3.1 the mailman addresses aren't working anymore, e.g. i get a "Recipient address rejected: User unknown in virtual mailbox table." when i try to send an email to a list address. The configugrations files are as created by ispconfig: Code: grep mailman *.cf main.cf:alias_maps = hash:/etc/aliases, hash:/var/lib/mailman/data/aliases main.cf:alias_database = hash:/etc/aliases, hash:/var/lib/mailman/data/aliases main.cf:virtual_alias_maps = hash:/var/lib/mailman/data/virtual-mailman, proxy:mysql:/etc/postfix/mysql-virtual_forwardings.cf, proxy:mysql:/etc/postfix/mysql-virtual_email2email.cf main.cf:transport_maps = hash:/var/lib/mailman/data/transport-mailman, proxy:mysql:/etc/postfix/mysql-virtual_transports.cf master.cf:mailman unix - n n - - pipe master.cf: flags=FR user=list argv=/usr/lib/mailman/bin/postfix-to-mailman.py could the issue be because the transport-mailman and virtual-mailman files are empty? (the aliases file has all the proper aliases in there): Code: root@liam:/var/lib/mailman/data# ls -la total 116 drwxrwsr-x 2 root list 4096 Okt 21 09:00 . drwxrwsr-x 9 root list 4096 Sep 4 13:51 .. -rw-r----- 1 root list 41 Jan 6 2014 adm.pw -rw-rw---- 1 root list 19326 Okt 23 20:40 aliases -rw-r--r-- 1 root list 40960 Okt 23 20:40 aliases.db -rw-r----- 1 root list 41 Jan 6 2014 creator.pw -rw-rw-r-- 1 list list 6095 Okt 3 2014 heldmsg-fribourg-comite-37.pck -rw-rw-r-- 1 root list 10 Okt 23 2013 last_mailman_version -rw-r--r-- 1 root list 14100 Sep 2 11:16 sitelist.cfg -rw-r--r-- 1 root list 0 Okt 23 20:40 transport-mailman -rw-r--r-- 1 root list 12288 Okt 24 13:24 transport-mailman.db -rw-rw---- 1 root list 0 Okt 23 20:40 virtual-mailman -rw-r--r-- 1 root list 12288 Okt 24 13:24 virtual-mailman.db thanks KoS