Admins be able to delete unsent mail from queue
Office 365 admins should be able to go into the mail flow queue and delete or resend emails that show "stuck" (either pending for a long time) or duplicate emails.
Mohammed Zia Ahmed commented
I face the same issue, yes Microsoft should provide Office 365 admin privilege to delete unwanted queue emails
Mike K commented
It seems silly you cannot clean out a users outbound queue. We had a user get hacked (credentials stolen). Hacker logged into their O365 account and started spamming all his contacts. We were notified shortly after, I disabled user, changed password, created a transport rule for outbound mail to simply delete the email if it was from this user. Shortly after I got an email from Microsoft saying the user was flagged as spammer and blocked (or similar wording).
Phew that was close... all safe now... no more email should go out... WRONG. I was monitoring email and i could see that emails were still being passed to our Barracuda (that we have filtering Outbound email also for this reason). I looked up this users queue and could see there were 100's upon 100's of emails stuck in the outbound queue at Microsoft. The status of the messages said "pending" and when you clicked on them they all said something like they were still trying to deliver this mail. Ok so i just need to clear out the Outbound queue. No way to do that? What!?!? We believe the user had fallen for a email scam that swiped his credentials. So I should have been able to change passwords, enable 2 factor auth (that i have had nothing but issues with due to older version of phones and older version of Outlook but that's another story) and we should have been good to go. But wait it is still trying to deliver all this spam. So if i turn on the account and remove all blocks it would have sent out those emails. I had emails still being attempted for delivery i believe up to approx. 36 hours later. Opened a ticket with Microsoft. Took about a week to get back to me and the end result was... no way to clear out the queue. I had to leave the users account disabled for almost 2 days to ensure none of that queued up spam would make it out. That sure doesn't seem like a great solution. Admin need to be able to delete things from the queue.
[Deleted User] commented
This needs to addressed. At least Microsoft Support should be able to do this for us!
Response from Microsoft 11/23/2018
We are unable to control mail pending queue within sent mail as you see them in message trace, must wait for the NDR/timeout/exchange error.
no ideal when the queue is trying to send email from a hacked account and Microsoft is unable to stop email which are still queued on their system
Rarely do I miss having my own Exchange server but this is one of those times. I'm surprised there is no solution to queued-up messages besides waiting for those NDR's to hit the distribution list that the reply address until the queue is cleared.
yip, there needs to be a solution here
Same issue as others. I've had a couple accounts compromised with forwarding set up in the last 6 months and there's no way to purge the queue.
Still looking for a solution to this problem. I have the situation AdamB mentioned below with dozens of pending messages from a malware attack waiting to be forwarded. Luckily, the hackers email inbox is full now, so I'm getting NDR messages and the email sent is being dropped. But I don't want to have to explain to my users for the next two days why they are receiving these NDR reports. This is absolutely a needed function!!
Adam B commented
It's crazy that either admin's or Microsoft Support can't purge messages that haven't been delivered, users accounts are getting compromised more and more and the hackers are setting up forwarding, so that all messages are sent to a different mailbox. The only way that users find out is that the mailbox eventually gets flagged by the receiving mailbox service and starts rejecting messages. If somehow they get access to that address again, I don't want any of these messages to be delivered, why can't somebody purge these messages from the delivery queue?
Joe G commented
Is this still not an option? Been trying to figure out how to do this since I had dozens in the queue at one point