Further to the recent intense persistent Spamming campaigns giving rise to varying VBA Macro content being delivered through our AVS services, we have chosen to include the .doc and .docx file extensions to the list of suspect attachments.
Specifically, senders who do not implement either DKIM or SPF, who attach either .doc or .docx documents to messages will accrue a poor message reputation score, and are likely to be classified as SPAM and treated accordingly for by the receiving domain.
If you have specific senders who are affected, that need to be able to send you these affected attachments, then you should consider Whitelisting either the sender’s specific address or their general domain from within your AVS portal login. To make these changes you should approach whomever administers the AVS Customer Portal within your organisation.
Best regards
Netnorth Support