Potential Microsoft rate limit issue?
Posted by TheGilmore@reddit | sysadmin | View on Reddit | 2 comments
Anyone else seeing this? We got a couple different clients/domains reporting this \~30 minutes ago, including one of our own users. Doesn't seem to be affecting everyone at those tenants though. And we're definitely nowhere near any kind of limit.
"Remote server returned '550 5.7.233 - Your message can't be sent because your tenant has exceeded its daily limit for sending email to external recipients (tenant external recipient rate limit)."
whatsforsupa@reddit
This popped up for us a few days ago.
There is a number of external emails you can send per a rolling 24 hours, it is based on how many licenses you have. In E 365, go to Reports - Mailflow - Tenant Outbound External Recipients and you can get some live data.
However, when we got this message, we where NOWHERE CLOSE to our limit. We contacted support and they mitigated the issue (aka, they set the "Throttled and blocked recipients count" enforcement to: Disabled". BUT they could not explain why it was happening to us. Our limit was like 22k outgoing emails, and in the rolling 24HR, we had sent like 3k. Luckily only 1 user reported this and it went away pretty quickly.
We chalked it up to a 365 blip, but I would be FURIOUS if that caused an "outage". Support was basically 0 help in giving us more information.
/rant, sorry
RangerRich1234@reddit
Nothing spikes my stress faster than multiple clients reporting the same issue at once especially when everything looks “fine” on paper and you’re nowhere near limits. Those are always the situations where you start questioning every dashboard, every config, and your own sanity at the same time.