[Gllug] Exim and virtual domains

[Paul Brazier]

> > Can someone give me some pointers to setting up "virtual domains" in
> > Exim? Is this what exim calls "directors"? The documentation looks >
> > very comprehensive but assumes you know all the jargon etc.
> 
> This is very easy.  Firstly, you're quite right about the directors. 
> I've created the following director in my own set-up:-
> 
> virtusertable:
> 	driver = aliasfile
> 	file = /etc/mail/eximtable
> 	search_type = lsearch*@
> 	include_domain

Tried this last night and it's working fine now. The only other thing I
did was add the virtual domains to local_domains in the
/etc/exim/exim.conf file i.e. like:

local_domains = localhost:foo.com:bar.net

I've found something here
http://www.exim.org/exim-html-3.30/doc/html/spec_43.html#IDX1763 on it
as well.
I put all the virtual domain mappings in the one /etc/mail/eximtable
file: I guess I may need one per domain if there becomes a lot of them
or if I want to let people administer their own email mappings etc.

The next thing is pop3: the problem being that I need a local user for
each pop3 account and to distinguish between paul at foo.com and
paul at bar.com
Should I be looking at something like Courier or Cyrus here? I'm only
going to need maybe 10-20 domains so could I handle this with Exim and
just have local users like user1 at foo.com etc? But then this makes the
pop3 configuration non-standard for the client who would just want to
have username="paul", pop3 server="foo.com" rather than remembering
username="user1 at foo.com", server="foo.com".
Are the more advanced mail servers designed to get round this problem by
having a separate authentication mechanism to the standard /etc/passwd
one and their own "mail spool" system?

Paul.



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