John Dubchak wrote:

Hi,

I've been working on configuring a new Postfix+Dovecot+Cyrus-SASL+Postgres server to perform multi-domain virtual hosting with non-unix accounts. I believe I have everything working correctly and have tested both the SASL portion and POP authentication through telnet and all works as expected, with one exception.

When I authenticate using POP3:

# telnet mail.host 110 Trying 192.168.XXX.XXX... Connected to mail.host. Escape character is '^]'. +OK Dovecot ready. user user1@domain1.com +OK pass secret +OK Logged in. -ERR No INBOX for user.

And the maillog reports the following:

Jan 21 13:42:32 mail.host dovecot: pop3-login: Login: user=<user1>, method=PLAIN, rip=192.168.XXX.XXX, lip=192.168.XXX.XXX Jan 21 13:42:32 mail.host dovecot: POP3(user1): mkdir(/var/spool/virtual_mailbox/domain1.com/user1/cur) failed: Permission denied Jan 21 13:42:32 mail.host dovecot: POP3(user1): mkdir(/var/spool/virtual_mailbox/domain1.com/user1/cur) failed: Permission denied Jan 21 13:42:32 mail.host dovecot: POP3(user1): Couldn't open INBOX: Internal error occurred. Refer to server log for more information. [2008-01-21 13:42:32] Jan 21 13:42:32 mason dovecot: POP3(user1): No INBOX for user top=0/0, retr=0/0, del=0/0, size=0

The directory structures for the virtual mailboxes are:

/var/spool/virtual_mailbox/domain1.com/user1 /var/spool/virtual_mailbox/domain2.com/user1

And the entire tree from virtual_mailbox down is owned by vuser:vuser. The directories have permissions 700.

What I believe is happening is that Dovecot is trying to use the uid and gid of user1, who doesn't have a system account, rather than vuser's when writing to the virtual_mailbox folders. I'm not sure how I can configure Dovecot to use the vuser information. if vuser has uid and gid of 5000

Have the userdb part of the dovecot config set to

userdb static {

args = uid=5000 gid=5000 home=/var/spool/virtual_mailbox/%d/%n 

allow_all_users=yes

}

instead of using the

userdb sql {

}

That should see you right. However, beware there may be security issues allowing one user to write to all mailboxes.

regards

Iain

Here is my dovecot.conf:

---

protocols = imap pop3 listen = [*] disable_plaintext_auth = no syslog_facility = mail

mail_location = maildir:/var/spool/virtual_mailbox/%h

# Default umask to use for mail files and directories. #umask = 0077

protocol imap { }

protocol pop3 { }

protocol lda { postmaster_address = postmaster@example.com }

auth_debug_passwords = yes auth_debug = yes auth_verbose = yes auth default { # SQL database passdb sql { args = /etc/dovecot-sql.conf }

userdb sql { args = /etc/dovecot-sql.conf }

user = root }

Any insight will be appreciated, I've been working on this non-stop for several days now and can't seem to figure it out.

Thanks, John