[comp.mail.sendmail] Which is the correct/standard way to set up a mail forwarder w/ MX ?

aaron@ux.acs.umn.edu (Aaron Y.T. Cheung) (10/22/90)

Question being:

I want to set up host abc.edu as MX forwarder for domain xyz.org,
whereas host def.edu (which takes to abc.edu via smtp) takes care
of all xyz.org mails,

could someone point me to the standard way to have it set up, with
sendmail.cf (or elsewhere)? Eg., how does major MX gateways running
SMTP do that, TECHNICALLY?

In short and again, host abc.edu will receive all mails for xyz.org
and forward it to def.edu for final delivery.

NOTE: root@xyz.org should NOT be forwarded to root@abc.edu (ie,
      xyz.org is not to be set up as an alias of abc.edu; and
      that the RFC822 From: header should not be modified)


You can assumption:
1. the MX record for xyz.org is already in the DNS system & readily resolvable.
2. abc.edu and def.edu can talk to each other via smtp

Thanks in advance, /aaron.
aaron@ux.acs.umn.edu