Dear users list, I'm trying to get postfix relaying for me as a central hub.
The central hub sits on the inside of my network and will need to rely outgoing mail for itself and other internal mail servers to our "Real" external mail server using sender based authentication. I would like to be able to do the following: === Send mail from the internal host: somehost.internal To: any external address - say some...@yahoo.com or some...@anywhere.xxx using a From address of u...@company.com via the host mail.internal The internal mail hub host - mail.internal will then need to send this mail via the external mail server: mail.company.com Authenticating to mail.company.com server using the sender based credentials for u...@company.com === Use the following for reference in the example above: a) Internal only "pretend" network mail domain name comp.internal b) Real external mail domain name company.com mail server for this is: mail.company.com and is outside our network c) Internal network zone 10.1.1.0/24 d) Name of host the internal mail hub server is on: mail.internal IP: 10.1.1.15 e) Example internal host needing to relay through internal mail server somehost.internal IP: 10.1.1.20 === I have tried a number of settings, but keep getting relay denied messages on the mail host hub, mail.internal All internal mail for comp.internal should be delivered as local mail by the mail hub server at mail.internal. Is this something postfix can do or am I trying to fit a square peg in a round hole? If it is possible any configuration suggestions would be greatly appreciated. Kind regards, Geoff
