On Tue, Mar 08, 2011 at 02:58:50PM -0500, Steve Angelo wrote: > > > So I was thinking.. Since my old server at rackspace is still up and > > > running, would it be possible to have configure my AWS postfix server to > > > send all outbound mail to the Rackspace postfix server and have that > > server > > > send out the email? The originating IP would have to be the Rackspace > > server > > > though, as if the mail still shows the originating as the AWS server it > > will > > > fail due to PBL. > > > > Look at > > http://www.postfix.org/postconf.5.html#relayhost > > or at > > http://www.postfix.org/postconf.5.html#sender_dependent_relayhost_maps > > in case you don't want to relay all sender through your other server. > > > > > Thanks.. by doing this will this change the source IP address of the mail to > the IP address of the email server I'm relaying the email to?
Yes. You send your emails to the relayhost which queues them and send them to the receiving MX. You should read about the fundamental concepts of email in genral and smtp in particular. Dennis
