I am seeing in my logs several of the following: -Queue ID- --Size-- ----Arrival Time---- -Sender/Recipient------- 9D3DB1FA461C 1046060 Fri Oct 10 09:37:27 [EMAIL PROTECTED] (host mx2.east.saic.com[198.151.13.25] said: 452 Deferred - [X.X.X.X] (in reply to RCPT TO command)) [EMAIL PROTECTED]
Above the [X.X.X.X] is my public IP address for my Postfix server. My question is this being caused due to a poor Postfix configuration in main.cf or is this an issue based on how the client connecting to my Postfix server is composing the message headers? I am assuming that the machine / client initiating the message is improperly using the mail servers IP and this is what the receiving host is rejecting, no?