I keep an eye on all the NDR's for my company.
I've been seeing a lot of the following NDR's:
The message contains a content type that is not supported
<tsc.republictitle.com #5.6.1 smtp;554 5.6.1 Body type not supported by Remote Host>
I found the following KB on Microsoft website: http://support.microsoft.com/kb/262168
Several times I've applied the changes to all my mailservers, and a few days later I'll start seeing a lot of NDR's with the error same error again. When I go back and check the servers again the 8BITMIME support will be turned back on some but not on others. It seems to be totally random. As soon as I turn it off, the NDR's stop.
Does anyone know why this is happening and what I can do remedy it permanently?
Thanks in advance for your help!