There are no virtual domains. Rather, all domains are virtual :) What you want is pop service for a fully qualified username@domain where username might not be unique among multiple domains.
The sendmail MTA handles one part. The delivery part is tricky for POP since the spec doesn't really discuss domain names (it sort of precedes when we might have wanted that). Currently, I might want "[EMAIL PROTECTED]" to be different from "[EMAIL PROTECTED]". To do this, I'd want users to log in as their full name, with domain. Some mail readers lop domainnames off (eudora did but may not anymore). The workaround was to have people put in "bob%abc.com" and the POP/IMAP server would just xlate % into @. With Sendmail's IMAP server, I can use the proxy to automatically append a domain based on the interface the request came in on. The proxy could run on the same host or, esp for TLS, on several external machines. "bob" on 204.89.168.5 would hit the server as "[EMAIL PROTECTED]" where "bob" on 204.89.168.10 would be changed to "[EMAIL PROTECTED]". QPopper, afaik, will not retain the domain name part. Quoting Clifton Royston ([EMAIL PROTECTED]): > On Wed, Oct 30, 2002 at 04:55:25PM -0500, Steven Champeon wrote: > ... > > Using sendmail, you can set up virtual domains with the virtusertable > > feature, and then create pop accounts to which mail sent to addresses > > in those virtual domains is delivered: > > > > [EMAIL PROTECTED] pop01 > > [EMAIL PROTECTED] pop02 > > > > then, the user checking mail at pop01 will get all mail sent to > > [EMAIL PROTECTED], and the user checking mail at pop02 will get mail sent > > to [EMAIL PROTECTED] See the sendmail documentation for more details: > > This is an example of a non-virtual implementation on the POP side. > > I.e. the user at [EMAIL PROTECTED] can not check mail at pop.abc.com *with* > the username 123 or [EMAIL PROTECTED], but has to set their username to this > totally nonintuitive username value known only to the internals of the > ISP's mail system. > > I'm getting beaten up about this by my sales manager (nicely!) every > so often too, if you can't tell.
