Hi All Fairly sure this issue I'm having is Microsoft's SmartScreen kicking in because of the change in our IP.
We've contacted Office 365 support but the team there doesn't seem to understand what I'm talking about. They are getting stuck on it being a "end user issue" as opposed to a service provider issue. Not having much luck getting it escalated. Is there anyone from the Microsoft team watching on that might be able to help? Shane From: mailop [mailto:[email protected]] On Behalf Of Shane Clay Sent: Monday, 2 November 2015 9:30 AM To: [email protected] Subject: [mailop] Office 365 - 4.7.550 Access Denied Hi All We've recently changed our DC setup and this morning any email we relay for our clients going to Office 365 is being blocked: 451 4.7.550 Access Denied. Seems like they don't trust the amount of mail we send (although that hasn't changed, just our IP) : Suspicious activity has been detected on the IP in question, and it has been temporarily restricted while it is being further evaluated. Any contacts around that can help me move this along? Shane
_______________________________________________ mailop mailing list [email protected] http://chilli.nosignal.org/mailman/listinfo/mailop
