Noel Jones put forth on 8/27/2010 2:28 PM: > You'll need to show evidence of that claim. Hotmail passes > reject_unknown_client_hostname here consistently. In fact I have a > check_sender_access map that specifically does > reject_unknown_client_hostname on any @hotmail sender address.
Unfortunately this occurred many many months ago and I didn't save any logs or the correspondence. Upon reflection, the hotmail farm servers themselves may not have had the problem. The servers sending the abuse desk acks definitely had the problem--mismatched forward/reverse names. I specifically had to disable reject_unknown_client_hostname to allow them through. I wasn't about to whitelist them. After this saga I switched back to reject_unknown_reverse_client_hostname and haven't had problems with MS or any other site since, WRT these checks. -- Stan