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University Information Technology

UIT: Infotech

Yahoo throttling or delaying UH emails

UIT Alert: Yahoo throttling or delaying UH emails

Current Status

ResolvedYahoo Message throttling corrected.

Affected Services

  • Email (Exchange)

Event Updates

IssueFriday January 5, 2018 - Yahoo throttling or delaying UH emails
January 5, 2018 , 12:28 PM

There are reports of Yahoo throttling or delaying UH emails. SMEs confirmed Yahoo throttling has not ceased.

The estimated time to resolution is unknown.

IssueUpdate - Yahoo addressed email is being delayed.
January 5, 2018 , 2:54 PM

Yahoo is currently throttling/delaying email from the University of Houston.

UIT Messaging Team is monitoring the situation and will report when the throttling has been lifted.

IssueUpdate - Yahoo addressed email may be delayed.
March 19, 2018 , 12:00 AM
Yahoo intermittently throttles/delays email from the University of Houston. Yahoo has changed its security protocols and may not distinguish legitimate UH emails from malicious spam. As a result, they delay delivery until times when there is very low email traffic. In order to maintain our trusted sender status UiT has instituted controls to quickly identify mail sent from compromised accounts. Additionally UiT encourages UH offices generating large volumes of mail to adhere to best practices.
ResolvedYahoo Message throttling corrected.
May 24, 2018 , 12:00 PM
Enterprise post-office personnel have been actively addressing issues related to Yahoo message throttling. The issue has abated and this notification is no longer necessary.