Proxmox server now is able to email by-default?

[rogierl]

Hey, I used to configure my proxmox server for sending emails using my own smtp server. I did that by following the steps written down in this thread. Now recently I have installed a fresh version of proxmox (latest version) and it seems like it is able to send emails out-of-the-box, right?

How does this work? What smtp server is used here?

 

[Lukas Wagner]

How does this work? What smtp server is used here?

Check out the documentation for the new notification system [1].

For 'smtp' notification targets, Proxmox VE directly talks SMTP to the configured SMTP relay, without the involvement of the installed Postfix MTA. The other email-based notification target type, 'sendmail' uses the installed Postfix MTA and does whatever Postfix is configured to do (the old tutorial should still work for these targets) - which is the old default behavior, before Proxmox VE 8.1 was released.


[1] https://pve.proxmox.com/pve-docs/pve-admin-guide.html#chapter_notifications

 

[rogierl]

Check out the documentation for the new notification system [1].

For 'smtp' notification targets, Proxmox VE directly talks SMTP to the configured SMTP relay, without the involvement of the installed Postfix MTA. The other email-based notification target type, 'sendmail' uses the installed Postfix MTA and does whatever Postfix is configured to do (the old tutorial should still work for these targets) - which is the old default behavior, before Proxmox VE 8.1 was released.


[1] https://pve.proxmox.com/pve-docs/pve-admin-guide.html#chapter_notifications

Thanks for your reply, @Lukas Wagner . Please see the (default) target that is configured in my home server. This is the default setting. Please note, I'm a home-user (newby), so I may be missing knowledge here .

But what email server does my proxmox server currently use, while sending email using sendmail?

 

[rogierl]

Also, I don't have a "/etc/pve/notifications.cfg" file.
I think my quesiton is: "what is the default smtp relay server"?

 

[Lukas Wagner]

Also, I don't have a "/etc/pve/notifications.cfg" file.
I think my quesiton is: "what is the default smtp relay server"?

There is no default relay
Postfix acts as a 'proper' MTA in its default config - if you e.g. send a mail to foo@example.com, it will look up example.com's MX record and will deliver the mail directly to that mail server.

 

[rogierl]

Ok, learning a lot here!
Does this mean that the MX records of my domain are "open up" for everybody to use?
I have a fastmail account and I guess that postfix uses my domain's MX records to send the mail.

But I don't get the part that it doesn't need some kind of authentication.