Recently our splunk security alert integration has stopped working last month (December) where we'd send an alert automatically from splunk cloud to our onmicrosoft.com@amer.teams.ms e-mail.
Is the support of this being deprecated on the Microsoft side? Or is this a whitelisting issue? Anyone else experience a similar problem?
I'm having a similar problem. When setting up an alert notification by email, the email address for the Teams channel is not being accepted. I'm still researching the issue.
Okay, this was an easy fix. Whitelist the email domain (for your Teams link) in Server Settings > Email settings. I successfully added mine after whitelisting.
If this is email-related (didn't know that there is a way to send to teams using email), I'd seek _internal for anything related to senmail.py and the destination address. I don't remember though if this data is available on Cloud. If it is not, it's probably something you'd need to go over with support.