Topic: Mail Relay
Hope you can help me. I have the folowing basic setup:
1x General mail server (let's call this General), Latest iRedMail, connected to Internet via NAT and receiving mail for a lot of domains in a private network
1x Specific domain mail server (tld1.com, which we'll call Specific), Latest iRedmail, not connected directly to the internet but sharing a subnet with the abovementioned server.
So basically, I want to receive and relay mails for Specific through General for tld1.com. The reason I want to do this is because I only have 1 static IP which the two servers need to share, and I will NAT to General, and I can't change the config on Specific to accomodate more domains (it does LDAP lookups, etc, so it's going to be messy, trust me). I do not have an issue if Specific SENDS outgoing mail, but all incoming mail coming in on General should just be relayed to Specific. I assume I only need to change the Postfix setup (I think via a MySQL record or something). Can someone please point me in the right direction?