[Dovecot] Error on mailbox file

[Timo Sirainen]

On Wed, 2010-09-29 at 14:26 +0000, augustocasagrande at gmail.com wrote:

> Sep 29 08:25:07 host1 dovecot: imap-login: Login: user=<USER>,  
> method=PLAIN, rip=172.20.22.12, lip=172.20.22.14
> Sep 29 08:25:07 host1 dovecot: IMAP(user): mail_location: mbox:  
> mkdir(/home/NT-DOMAIN/user/mail) failed: Permission denied  
> (euid=10188(user) egid=10001(domain users) missing +w perm: /home)
> Sep 29 08:25:07 host1 dovecot: IMAP(user): Fatal: Namespace initialization  
> failed
> 
> Here , i assume the user put his user name in CAPS (USER), and that i  
> generating an error. Then Dovecot tries to create the directory  
> /home/NT-DOMAIN/user/mail. 

So what would have been the correct directory for this user?

If the problem is caps, you can try if auth_username_format=%Lu helps.
If not, send full dovecot -n output.