We’ve been notified of a problem with a recent set of definition updates for our anti-malware/anti-virus system that has inadvertently caused some messages to be rejected by our filtering servers.
You may have experienced this issue or been informed by an outside party that your message was rejected, with an error similar to or the same as the following:
Your email was rejected because it contains the MBL_349876.UNOFFICIAL
We’ve taken the steps necessary to resolve the issue and ensure that mail is once again flowing through to our customers. This was an upstream issue caused by a bad set of definitions provided by our anti-malware/anti-virus distributor. We apologize for the inconvenience and will keep you informed of any further status changes or problems, should they occur.
Smile Support Team