I am unable to receive email from a handful of MSN.com clients 95% of the time. But there are more clients than not whose MSN email is coming through without problems. The MSN senders receive the following message:
This is an automatically generated Delivery Status Notification.
Delivery to the following recipients failed.
(no details provided in the message)
I have a Barracuda Spam Filter, but the non-delivered emails are not even hitting the filter; I contacted Barracuda Support to confirm. I also contacted my ISP who ran an smtp test from MX toolbox and it is resolving the correct MX records. Both Barracuda and ISP recommend I contact Microsoft.
I have contacted Microsoft support, which has been a lost cause. They will not support this issue. Has anyone else had this problem, know of a solution, or have that special Microsoft contact?
Running Exchange 2007
Cisco ASA Firewall