I have a client whose IMgate is successfully sending and receiving msgs with hotmail. I did have to increase smtp and smtpd timeouts a bit to reduce the timeouts with very slow hotmail, but basically all the hotmail stuff I see in the maillog looks good. And hotmail outbound is connecting to IMgate from a wide range of IPs under in the Class B [65.54.c.d].
However, some, not all, hotmail clients are saying that hotmail returning is msgs undelivered, giving no reason other than "could not deliver". With no apparent problems in the maillog, it's very hard to troubleshoot. In fact, I'm stumped. Anybody have any hotmail experience like this? thanks Len
