MX and POP3 on 2 machines

[Michael T. Babcock]

I'm wondering what facilities exist for distributing some of the Qmail
work across two machines in the following way:

'mx.ourdomain' accepts connections from the outside world and handles
receiving mail for all hosted virtual domains.
'mstore.ourdomain' receives all the messages from 'mx' that are for the
virtual domains and stores them for POP3 or IMAP retrieval.
'mx.ourdomain' is also the SMTP box for sending messages out to the
Internet.
--
Michael T. Babcock