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Performance Issue: Certain Mail to Non-@cornell.edu Addresses in Microsoft

Last Updated:
2018-05-16 08:14:29
Event:
2018-05-14 12:00:00
Status:
Closed
Brief Description:
On May 14, 2018 noon-9:30pm, Cornell email sent using a specific service (AppSMTP) to some accounts that don't end in "@cornell.edu" hosted by Microsoft, was refused by Microsoft. The issue didn't affect mail sent to addresses ending in "@cornell.edu."
User Impact:
Some emails were refused by Microsoft. Microsoft sent a message to the sender saying the email was not delivered.
Workaround:
There is no workaround for this issue
Current Status:
The block was removed by Microsoft around 9:30pm on May 14.
Services Affected:
Email and Calendar
Subsites Affected:
Faculty/Staff Email (Office 365)
Student Email (Cmail)
Full Description:
The following issue did not affect mail sent to addresses that end in "@cornell.edu."

On May 14, 2018, from around noon to 9:30pm, email sent from within Cornell using a specific email service (AppSMTP) to some accounts that do not end in "@cornell.edu" and that are hosted by Microsoft, was refused by Microsoft.

In some cases, this issue affected mail sent to and from some Cornell addresses with additional components (like @cs.cornell.edu), as well as list or automated messages from Cornell entities that use AppSMTP to send. If you have questions about whether you’re affected, contact your technical support provider.

When Microsoft refused the messages, it replied to senders, letting them know they were not delivered. If your email address doesn’t end in "@cornell.edu" and you didn’t receive an email you were expecting, you may want to contact the sender.

Cornell staff who run services that send email through AppSMTP may want to check records for the time of the issue for notification of potential non-delivery of messages.



Timeline of Changes

Description Current Status Date Time
The following issue did not affect mail sent to addresses that end in "@cornell.edu." On May 14, 2018, from around noon to 9:30pm, email sent from within Cornell using a specific email service (AppSMTP) to some accounts that do not end in "@cornell.edu" and that are hosted by Microsoft, was refused by Microsoft. In some cases, this issue affected mail sent to and from some Cornell addresses with additional components (like @cs.cornell.edu), as well as list or automated messages from Cornell entities that use AppSMTP to send. If you have questions about whether you’re affected, contact your technical support provider. When Microsoft refused the messages, it replied to senders, letting them know they were not delivered. If your email address doesn’t end in "@cornell.edu" and you didn’t receive an email you were expecting, you may want to contact the sender. Cornell staff who run services that send email through AppSMTP may want to check records for the time of the issue for notification of potential non-delivery of messages. The block was removed by Microsoft around 9:30pm on May 14. 2018-05-16 08:14:29