Hello everyone. This is my first post on here. I looked all over the web but couldn't find anyone complaining about this so I thought I was ask here.
I worked with several customers today who reported no email being received by their mail server. All of these customers had IIS relay servers forwading to their Exchagne 2003/2007 servers. Upon investigation I noticed that all of them had their remote domains and alias removed. Normally I would chalk it up to coincidence, but I had 8 total customers report this problem. Adding them back resolved the problem but I'm curious as to what could be causing this. This does not appear to be happening on Exchange server but just IIS relay servers running SMTP.
I noticed there was a patch released on tuesday that dealt with a vulnerability discovered in SMTP so I tested this out by installing this patch in a lab and could not reproduce this problem even with all windows updates....
Is anyone else seeing this?
Thanks in advance for your suggestions.