SMTP notifications Office365

[chris_cacro]

Hello all,
The notifications don't work for me with those configuration settings :
https://helpcenter.veeam.com/archive/vb ... ations.png

The firewall doesn't block and the recipient mail adress is in the same domain like the sender.

Do you have an idea about this problem ?

Thanks for your help.

[c2nathan]

In my environment, I found that the most reliable outcome was after I set up a small IIS/SMTP server to relay for me. Veeam is directed to use [internal-smtpserver.internal.mydomain.com], which then has smart-host configuration for onwards delivery to O365 and out to the final destination. As a nice bonus, I can deliver notifications to recipients in both internal and external domains. It also makes mail-handling for all the other internal sources I want to give mail capabilities to a breeze - just add/remove addresses from the internal SMTP engine's allow list, and away you go.

Ref:
https://docs.microsoft.com/en-us/exchan ... g-office-3

[ajtardio]

@chris_cacro - do you have a Mail Flow Connector setup in Exchange Online to allow sending email from specific IPs? That's the typical setup, you will need to add the public IP for the server you're trying to send from to Exchange to allow the email to flow.

Option 3 in this documentation: https://docs.microsoft.com/en-us/exchan ... smtp-relay