[TriLUG] Multi Domain IMAP Servers

[Jason Tower]

no matter what, yout postfix instead of sendmail.  that's an easy choice.

if you don't have a huge number of users, courier is probably the best 
pop/imap solution.  you can handle multiple domains in a variety of ways 
(postfix virtuals, sendmail virtuals, mysql/ldap virtual users, etc) and 
it's a snap to use procmail or maildrop to invoke spamassassin.  cyrus 
is the other obvious choice, it's more complicated (IMO) but better 
suited to handling lots of users in lots of domains.

i've run postfix/courier/procmail/spamassassin on my hosting server for 
a handful of domains for a couple of years now.  it's both rock solid 
and very simple to set up.  manageability might suffer if i had hundreds 
or thousands of user accounts but i'll cross that bridge when i come to it.

jason

Aaron Bockover wrote:
> Howdy!
> 
> I made the jump to Linode UML hosting, and am rolling Debian/MySQL
> 4.1/Apache2/PHP 5 out on the box. That end of things is all set up. The
> server supports about 10 domains, each with separate Apache Virtual
> Hosts, MySQL databases, shell accounts, etc. Pretty much standard stuff.
> 
> I'm quite knowledgeable in the area of MySQL/Apache/PHP server stuff,
> and general admin stuff, but what I haven't had much experience with is
> email systems, since I've never had a real fat pipe to the house, and
> always had great shared web hosting, I just used my hosted email on my
> virtual servers.
> 
> So what to install on my new UML server? I don't really know where to
> start, but here are the things I need:
> 
> - IMAP, POP3 optional (would be best if it's an IMAP server that
> supports a "virtual" POP3 layer)
> - Multiple Domain support (aaron at domain1.com and aaron at domain2.com need
> to be SEPARATE accounts) 
> - Further Multiple Domain support, this one is optional, but desired:
> aaron at domain1 and aaron at domain2 are the SAME account, but aaron at domain3
> is DIFFERENT than the other two...
> - Spam Assassin is a must - I'm currently using it on my shared hosting,
> and it captures about 95% of my spam. Not sure how this gets configured,
> but I'm guessing it comes into play regardless of mail system? Eigh?
> 
> I also need an SMTP server. Should I just use sendmail, or go to
> Postfix? Any good recommended reads for either?
> 
> I have been running Hula on my home server for a few weeks, trying it
> while pondering the move to UML. Conceptually, I like it, and I'd
> probably use it, but it doesn't support multiple domains like I need.
> Unless I'm missing something?
> 
> Some guided advice would be splendid!
> 
> Thanks!
> -Aaron
>