LD wrote: > I don't use the submission port on either server, just port 25, but 5.9 > sends a message-id and 6.0 does not. What does "/if necessary/" mean for the > 5.9 server? What is the deciding factor to make the header necessary? I > would like the v6.0 server to send a message-id too, how do I make > whatever-it-is necessary on this server? Or was the "if necessary" feature > removed in 6.0 and replaced with "...submit port"?
The test is checking for port 587. Which is normally the outbound submission port. Outbound mail should have message-ID added. Port 25 is more typically inbound mail, and the receiving server should not be adding its own message-ID. I don't know if this is the best possible result, although it's pretty close to what most people want. Anyway, it's not really configurable without changing the code.
