Symptoms

We have a huge problem in MSMQ EventBus execution speed. Task notifications are piling up and are being sent with delay of 2-7 hours making Production almost unusable (prntscr attached). Mail event from process and mail event from Form are sending notifications without problems. This problem came suddenly today after working properly for more then a year. No configuration changes were made recently.

Restart of app server was made but it didnt help.

 

Diagnoses

See resolution
 

Resolution

We couldn't pinpoint the issue unfortunately. It could also have something to do with the Exchange Mail server, might be worth looking into.

Please also have a look at this article:
http://community.k2.com/t5/K2-blackpearl/Not-Receiving-the-Email-from-k2/ta-p/74074

You can do a general search on our community site for "MSMQ":
http://community.k2.com/t5/forums/searchpage/tab/message?filter=labelsandq=msmq