I did call Office 365 and they did notify me that this is wide-spread, a service advisory may be coming soon in the portal. Just a heads up for all O365 admins out there. Dakota Gartley | Network Engineer Platinum Systems, Inc. | www.platinumsystems.net<http://www.platinumsystems.net/> p. 888.910.4407 | p. 262.652.6671 | f. 262.652.6647 From: Outages [mailto:outages-bounces@outages.org] On Behalf Of Dakota Gartley via Outages Sent: Wednesday, December 20, 2017 4:53 PM To: outages@outages.org Subject: [outages] Office 365 Bouncebacks Currently seeing this error across multiple Office 365 tenants when trying to send mail, anyone else seeing this? Remote Server returned '550 5.7.705 Access denied, tenant has exceeded threshold. For more information please go to http://go.microsoft.com/fwlink/?LinkId=524931 AS831' Dakota Gartley | Network Engineer Platinum Systems, Inc. | www.platinumsystems.net<http://www.platinumsystems.net/> p. 888.910.4407 | p. 262.652.6671 | f. 262.652.6647