Mail delivery to hotmail.com, live.com, outlook.com and others
Reported on
We are currently unable to deliver mail to domains protected by Microsoft's olc.protection.outlook.com mail servers. This is due to a certificate problem on Microsoft's end. Affected domains include hotmail.com, live.com, outlook.com as well as many other third-party domains hosted under their service.
Update 1: We have applied a workaround on our end to allow mail delivery to these domains to work. Any stuck mails due to this issue should now be delivered.
Update 2: Our mail queue is now clear of stuck mails connected with this issue.