[Dovecot] postfix, dovecot, samba, winbind

[Denis Witt]

Hello List,

we're currently working on the migration of our LDAP/Samba3-Domain to Samba4-Active-Directory. So far everything works fine. Postfix can deliver Mails using ProxyAddresses-Information from the AD and Dovecot delivers the mail.

Unfortunately when Postfix tells Dovecot to deliver the mail he submit the username without the AD-Domain part:

Feb 28 17:17:59 tpdc postfix/pickup[30396]: 5DDAE2C0C2B: uid=0 from=<root>
Feb 28 17:17:59 tpdc postfix/cleanup[30402]: 5DDAE2C0C2B: message-id=<20130228161759.5DDAE2C0C2B at mx0.concepts-and-training.de>
Feb 28 17:17:59 tpdc postfix/qmgr[30395]: 5DDAE2C0C2B: from=<root at concepts-and-training.de>, size=463, nrcpt=1 (queue active)
Feb 28 17:17:59 tpdc dovecot: lda(dwitt): msgid=<20130228161759.5DDAE2C0C2B at mx0.concepts-and-training.de>: saved mail to INBOX
Feb 28 17:17:59 tpdc postfix/local[30404]: 5DDAE2C0C2B: to=<dwitt at concepts-and-training.de>, orig_to=<denis.witt at cat06.de>, relay=local, delay=0.24, delays=0.1/0.01/0/0.13, dsn=2.0.0, status=sent (delivered to command: /usr/lib/dovecot/deliver)
Feb 28 17:17:59 tpdc postfix/qmgr[30395]: 5DDAE2C0C2B: removed

So Dovecot saves the Mail to "/var/mail/dwitt/", which is fine for me. The Problem kicks in when I try to read my Mail. Dovecot uses "TESTDOM\dwitt" as username and so he didn't find the Mailbox and create a new one in "/var/mail/TESTDOM\dwitt".

I tried to fix it with auth_username_translation and auth_username_format but it doesn't work.

Any ideas?

Thanks!