Is it possible to have alternative urls to access webmail for each domain?

Question 1:

I have a mail server ( that handles mail for two other servers ( and that serve websites.

Right now to access webmail for all 3 servers I would go to

I would like to be able to access webmail by going to the following urls:

Is this possible?

Question 2:

My mail client uses as the IMAP/SMTP host.

Is it possible to also allow the host to be: and so that they are specific to each server?

I’m trying to figure this out as well, as I administer servers for multiple small businesses and was hoping to move away from dreamhost entirely.

(1) would be tricky.

(2) should work fine if you install a multi-domain SSL certificate and ensure that the other domains resolve to the box’s IP.