Browse by Tags

Related Posts

Blog Post: P2 Headers Now Respected for End User Safe and Blocked Senders Lists

Andrew Stobart

Exchange Online Protection will now evaluate both the P1 and P2 headers in a message against an end users safe and blocked senders list. I know, I’m super excited too! Previously only the P1 header of a message was compared to these lists. Not only does this make blocking or safe listing within...

on 26 Sep 2014
Blog Post: The Resolver

Andrew Stobart

While “The Resolver” would be a great nickname for a councillor, that’s not quite what we are talking about here. When processing inbound messages, Exchange Online (not EOP Stand Alone) will always resolve the recipient to the primary SMTP address before evaluating transport rules....

on 25 Jun 2014
Blog Post: Prevent DLs From Receiving ESNs

Andrew Stobart

I’m often asked how to prevent an End user Spam Notification (abbreviated as ESN from this point on) from being sent to a distribution list (abbreviated as DL from this point on). Before getting to the answer, let’s start off with some background information on ESNs to see why this question...

on 13 Jun 2014