Hello, I could not find a mention elsewhere, but are there some forbidden names that cannot be used for mail addresses or aliases? I am trying to set up a forward "mailing@...", but I keep getting "unknown user". All other entries like "mailring@" do work. I need this to forward to a mailman mailing list. Help greatly appreciated! Gert
I am still at a loss. Weather I set up "mailing@" as a forward, or as an account, I always receive: " <[email protected]> (expanded from <mailing@clientdomain>): unknown user: "mailing". If set up as account, I can login to squirrelmail fine. I can't find anything in the postfix documentation about reserved mail prefixes, is it possible this happens in amavis? Every other mail prefix works fine, btw.
There is nothing in the aliases file except the usual stuff. The Ispconfig db does contain the entries in the mail_user resp mail_forwarding tables- It is a riddle to me why postfix won't accept them while dovecot does.
You can not add mailboxes (virtual users) for the server hostname in postfix. Postfix matches everything @server.hostname against Linux shell users and not mailboxes. That's why the hostname shall be a subdomain and is never used for mailboxes or websites.
Sorry I did not explain properly. I added username@customerdomain, which works fine. Adding mailing@customerdomain does not work, as does mailing-admin@customerdomain etc. The server hostname is only what gets expanded in the bounce reply, the error message. There is no shell user by that name.
I'm not sure if I understand you right. The server hostname is "mail5.mycompany.com". The client domain name is "someclient.org". Does what you say imply I cannot set up any virtuser or forward that contains "mail***@someclient.org"? Or any prefixes containing "mail*" for any other client domain, at all? I tried postfix debugging but it does not tell me anything more than "The mail system <[email protected]> (expanded from "[email protected]"): unknown user: mailing". This would be very unusal, and unlucky indeed.
No. I just meant that you can not add email addresses like [email protected]. Search your postfix config if there is something about mailing: grep mailing /etc/postfix/* grep mailing /etc/aliases
Nothing in /etc/postfix/* The comment for the initial mailman list in /etc/aliases: "## mailman mailing list" (I had added it following an outdated howto for adding mailman). Removed the whole set of mailman aliases, newaliased, restarted postfix. Same behaviour: mailing: unknown user.
