UTM 9.510-5 is blocking lots of mail in/out and internal as SPAM

Question

HI, 
 
 Since 8:48 AM CET out UTM is blocking almost almost all mail as SPAM , it started with outgoing mail only but now also incoming mail is effected. 
 We need urgent support, I'm already on hold for 45 minutes with Sophos Support! 
 Regards, 
 Dave

VE01 · Accepted Answer

SOLVED 
 Reply from Shophos Technical Support: 
 The response that I got back from the labs was that the messages were classified as spam because it contained the URL schemas.microsoft.com/office/2004/12/omml, which was misclassified as spam. They now have cleared the reputation of this URL and as you checked already, it seems that it fixed the issue.