Page is a not externally linkable
Demaestro - 7:52 pm on Jul 8, 2008 (gmt 0)
This just happened for a new site of ours. Same thing as the thread starter.. a heads up employee checked the reverse DNS and found it wasn't set up properly. Because I am a developer a rely on my sys guys for this stuff... it is good to know my guy is on top of these things... I wasn't really aware of the consequences even though I was aware of the protocol... I suspect that this is true for many.
If they do a reverse DNS lookup on IP and find that the host name does not match they may reject the attempted mail delivery.