Hi,
I'm trying to allow domain-less logins for a multi-domain virtual IMAP server, and wondering if I can automatically infer the domain (value of variable %d) from the local IP (%l) or the hostname used by the client when connecting to my server.
Let's say I have two host names: mail.foo.org (10.0.0.100) and mail.bar.com (10.0.0.200), with forward and reverse DNS configured to resolve A and PTR records in either direction.
Let's also say I have 10.0.0.100 and 10.0.0.200 set up as secondaries on my server's loopback interface, and routing is set up to bring client traffic to me for both of those IP addresses.
The relevant bits of my dovecot.conf are:
---%<------------------------------------------------------------------ mail_location = maildir:/var/lib/vmail/%d/%n passdb { driver = passwd-file args = /var/lib/vmail/etc/postfix/userdb } userdb { driver = static args = uid=dovenull gid=dovenull home=/var/lib/vmail/%d/%n } ---%<------------------------------------------------------------------
And my userdb passwd-file right now includes:
---%<------------------------------------------------------------------ user1@foo.org:{PLAIN}user1foo user2@foo.org:{PLAIN}user2foo user1@bar.com:{PLAIN}user1bar user2@bar.com:{PLAIN}user2bar ---%<------------------------------------------------------------------
Right now, user1@foo.org must configure their imap client like so:
IMAP server: mail.foo.org
username: user1@foo.org
password: user1fooI would like to require this (and other) users to only have to set:
IMAP server: mail.foo.org
username: user1
password: ...and have dovecot somehow infer the "@foo.org" domain based on the fact that the connection was made to 10.0.0.100, which is mail.foo.org, and therefore the domain can *only* be "@foo.org".
I could start out by splitting my user database into two files:
userdb.foo.org ---%<------------------------------------------------------------------ user1:{PLAIN}user1foo user2:{PLAIN}user2foo ---%<------------------------------------------------------------------
userdb.bar.com ---%<------------------------------------------------------------------ user1:{PLAIN}user1bar user2:{PLAIN}user2bar ---%<------------------------------------------------------------------
... then modify dovecot.conf's passdb setup like so:
---%<------------------------------------------------------------------ passdb { driver = passwd-file args = /var/lib/vmail/etc/postfix/userdb.%d } ---%<------------------------------------------------------------------
... but how would I insure that %d is set to the proper value based on e.g. a reverse lookup of %l, which, in foo.org's case would be 10.0.0.100, and resolve to mail.foo.org, and *somehow* that would match %d == "@foo.org" ?
Is this even possible in the first place, or am I just being too fussy about the aesthetics of my users' imap client config files ? :) :)
Thanks much, --Gabriel