Notifications Email stopped working

[jeffgott]

I am currently running version 9.2.11. I used to receive notification emails (when updates were ready, ZFS has finished a scrub, etc). At some point, these notifications stopped working. The only thing changed has been Proxmox updates.

When I go to Datacenter, Notifications, and select Test, I get a message that the email was sent but I never receive anyhing. There is nothing in my spam.

Any thoughts as to how I can figure out why this quit working?

 

[Francois Baillargeon]

Run `tail -f /var/log/mail.log` (or `journalctl -u postfix -f`) in one SSH session, then click Test in the GUI. This tells you immediately whether the message even leaves Postfix, and if not, why (connection refused, DNS failure, auth error, relay rejection, etc.).

You will see it there

 

[jeffgott]

Run `tail -f /var/log/mail.log` (or `journalctl -u postfix -f`) in one SSH session, then click Test in the GUI. This tells you immediately whether the message even leaves Postfix, and if not, why (connection refused, DNS failure, auth error, relay rejection, etc.).

You will

 

[jeffgott]

It looks like I'm getting an error "Network is unreachable". I can ping that host and it should be valid. We have other apps that are working fine using the host and SMTP config.

 

[Francois Baillargeon]

The dns entry seems like a IPv6 entry, is that wanted?

 

[jeffgott]

The dns entry seems like a IPv6 entry, is that wanted?

I'm not sure. How is that controlled and why did it work before?

 

[Francois Baillargeon]

Nevermind, I'm reading again and it seems it reached the IPv4 endpoint as it says Queued by delivery, I think at this point it may just be an issue with your Microsoft 365 smtp gateway, anything getting dropper or quarantined there?

 

[jeffgott]

Nevermind, I'm reading again and it seems it reached the IPv4 endpoint as it says Queued by delivery, I think at this point it may just be an issue with your Microsoft 365 smtp gateway, anything getting dropper or quarantined there?

Yes, it looks like Microsoft 365 startred quarantining these emails. I'll look into that.

 

[Francois Baillargeon]

Excellent, sadly it falls out of Proxmox's realm but I wonder if the syntax changed or something, anyways good luck!!

 

[jeffgott]

Excellent, sadly it falls out of Proxmox's realm but I wonder if the syntax changed or something, anyways good luck!!

 

[jeffgott]

We had to create a rule in Microsoft 365 to disable the spam policy. All is fine now. Thanks.

 

[Francois Baillargeon]

We had to create a rule in Microsoft 365 to disable the spam policy. All is fine now. Thanks.

Excellent!!