This morning I noticed that we are receiving errors with incoming emails on all libraries within our farm. Up until the other day it was working correctly. At this point in time emails/attachments are not getting to SharePoint. Emails do make it to the drop folder of the mailroot.
No updates were done to the servers, no account changes.
Environment: SharePoint 2010 SP1 CU's through August.
Error: ID 6874 "An error occurred while attempting to create an attachment for an item sent via e-mail. The URL is invalid. It may refer to a nonexistent file or folder, or refer to a valid file or folder that is not in the current web.
During my initial research a lot of posts on Forefront security for SharePoint, which we do not have configured and FCSrealtimescanner.exe is not running anywhere.
Any thoughts/suggestions would be appreciated.