I currently have a server with postfix/dovecot/postfixadmin and squirrelmail running for multiple domains. I use mysql to store the account/domain details. However, if I go to the webmail of a domain on my server, I can login to all email accounts on any domain on my server. How can I make it only possible to login to a mailaccount using on the right domain? And if i've done this, is it also possible to allow to login to all mailaccounts using the ip-address of the server directly?
In short, I want that if a user goes to domain1.com/webmail he can only login to emailaccounts with @domain1.com, but if a user goes to A.B.C.D/webmail he can login to all emailaccounts on the server.
I think I wasn't clear enough in my post, so I will try to explain a little bit better what I have:
I have one postfix/squirrelmail installation, and squirrelmail can be accessed on any domain through domain.com/webmail (/webmail is aliased). But because I only have one installation, you can login on all domains on my server using any domain. So for example, if I have domain1.com and domain2.com, you can login with email@example.com at www.domain2.com/webmail. I dont want this. The only exception to this rule is that I want to be able to access the complete mailserver, so all emailadressess on all domains, using the ip-address of the server (A.B.C.D/webmail). Sorry if my question isn't clear, english is not my main language so I sometimes have some trouble explaining my problems in english.