Office365 support incompetant - All emails marked as spam due to hyperlinks in email siganture

Hello all,

This thread has come to my attention. Let me fix some misconceptions:

Office 365 absolutely does scan messages "on the way out". This is done to protect our IP reputation. If a message is deemed spammy, then it will be marked as spam and sent out via a special pool of IPs. This pool of IPs has questionable reputation and we do not attempt to maintain their reputation.  We do absolutely monitor the reputation of our good IP addresses - so much so that I'm fairly certain that is not an issue here.

Most often, I do see false positives happening when someone creates an automated email signature with links in them. A false positive requires a spam rule to be adjusted on our side. This is simple -

1) First report the problem in Submissions Explorer

2) If not getting headway, open a ticket - we just need the samples with the full headers showing what happened so that our engineering team can correct the rule.  It is an easy fix - if you're not getting the help you need from the support, point them to this post as guidance. 

I apologize for any inconvenience.

Regards,

Scott