Skip to main content

Performance Issue: Mail from E-List and Certain Other Cornell Sources to Office 365

Last Updated:
2018-01-08 11:12:39
Event:
2018-01-03 09:30:00
Status:
Closed
Brief Description:
At around 9:30am, Wednesday, January 3, 2018, Office 365 began rejecting email sent from e-list and some other Cornell systems. At 3:30pm Microsoft made a change that allowed the mail to begin being accepted again.
User Impact:
Mail from some university sources was rejected by Office 365. A message sent from Microsoft refusing the email included the phrase "Service unavailable. Client blocked from sending from unregistered domains."
Workaround:
There is no workaround for this issue
Current Status:
Email from all Cornell sources that were affected by this problem continues to be delivered to Office 365.
Services Affected:
Email and Calendar
Mass Email
Subsites Affected:
E-lists (Lyris)
Faculty/Staff Email (Office 365)
Full Description:
At around 9:30am, Wednesday, January 3, 2018, Office 365 began rejecting email sent from e-list and some other Cornell systems. At 3:30pm Microsoft made a change that allowed the mail to begin being accepted again. Cornell and Microsoft staff are continuing to work on the issue.



Timeline of Changes

Description Current Status Date Time
At around 9:30am, Wednesday, January 3, 2018, Office 365 began rejecting email sent from e-list and some other Cornell systems. At 3:30pm Microsoft made a change that allowed the mail to begin being accepted again. Cornell and Microsoft staff are continuing to work on the issue. Email from all Cornell sources that were affected by this problem continues to be delivered to Office 365. 2018-01-05 08:53:47
At around 9:30am, Wednesday, January 3, 2018, Office 365 began rejecting email sent from e-list and some other Cornell systems. At 3:30pm Microsoft made a change that allowed the mail to begin being accepted again. Cornell and Microsoft staff are continuing to work on the issue. The fix Microsoft applied at around 3:30pm, Wednesday, January 3, 2018, is believed to have worked for all affected Cornell services. Messages sent to e-lists between 9:30am and 3:30pm that day should be re-sent to reach subscribers in Cornell’s Office 365. Cornell and Microsoft staff are continuing to monitor mail flow, work on analyzing the problem, and put a permanent solution in place. 2018-01-04 08:32:51
At around 9:30am, Wednesday, January 3, 2018, Office 365 began rejecting email sent from some Cornell systems. Mail from e-lists was affected, but started flowing again at 3:30pm that day. Cornell and Microsoft staff are continuing to work on the issue. Microsoft has applied a fix to this issue that allowed e-list messages to be accepted by Office 365 starting at around 3:30pm, Wednesday, January 3, 2018. Messages sent to e-lists between 9:30am and 3:30pm that day should be re-sent to reach subscribers in Cornell’s Office 365. Cornell and Microsoft staff are continuing to work on analyzing the problem, identifying the extent to which mail from other Cornell services is affected (including reports of issues with email from Cornell Dropbox), and putting a permanent solution in place. 2018-01-04 08:11:53
Office 365 is currently rejecting email sent from some Cornell systems, like e-list (list.cornell.edu), Cornell Dropbox (dropbox.cornell.edu) and selected other university sources. The problem began around 9:30am, Wednesday, January 3, 2018. There have been reports that Cornell Dropbox (dropbox.cornell.edu) is also affected. Cornell staff are working with Microsoft to investigate and find a solution for the problem. 2018-01-03 15:14:29
Office 365 is currently rejecting email sent from some Cornell systems, like e-lists (list.cornell.edu), and selected other university sources. The problem appears to have begun around 9:30am, Wednesday, January 3, 2018. Cornell staff are working with Microsoft to investigate and find a solution for the problem. 2018-01-03 11:47:42