I have an SMTP server down and would like to use another box temporarily. The IP address of the down server is setup with reverse DNS. I added this IP address as an alias to the interface on the temp box, can Postfix control the IP used to send and allow me to use that alias IP address when sending out so the reverse DNS will keep working? Right now, it looks like mail is coming from the primary IP address of the interface. And will this work for my purposes?
-- Robert
