[Dovecot] Restricting IMAP access

[Thierry de Montaudry]

Hi list,

I have a setup with postfix+dovecot+mysql unser CentOS 5, running 50 odd domains with virtual users. Access is allowed for public POP3, and a webmail on apache+PHP solution through local IMAP.
I'm not gonna give you the long story about the why, but I'm looking for a way to give public IMAP access only to one domain, knowing that users log in with full email (user at domain.tld).
Anybody has a trick for that? Running dovecot 2.0.13.

I know there should be a way to do it through the database, but quite heavy change on our side for a million odd users.

Regards,

	Thierry