[SOLVED] email_from in Datacenter.cfg seems to be ignored

[Fett]

I am running Proxmox 6.1-5. I use a Smarthost to relay e-mails, and my postfix configuration seems to be set up correctly as I can send a test e-mail like this:
echo "body of your email" | mail -s "This is a Subject" -a "From: validaccount@mydomain.com" root
and I receive the e-mail.
However when the proxmox system sends e-mails to root, and they forward to the e-mail set for the root user, they end up bouncing back from my Smarthost because they are being sent as root@hostname.local.domain, and I need them to be send as validaccount@mydomain.com.

From what I understand, this is the purpose of the email_from setting in the datacenter.cfg. I have entered the e-mail here validaccount@mydomain.com but it does not seem to be working.

What do I need to do, in order for e-mails that forward to the root e-mail account be sent out as validaccount@mydomain.com?

 

[Stoiko Ivanov]

Please post the (anonymized) logs of both of these test-emails.
the 'email_from' sets the envelope-from address (the one used during the SMTP dialogue) - your testmails sets the From header inside the mail
(It would be odd if a smart-host uses the From header for validation and access)

maybe your Smarthost offers SMTPAUTH - which you could configure

I hope this helps!

 

[Fett]

I was able to work around this issue by adding a smtp_generic_maps to my postfix main.cf and then creating a generic file with a map for root@hostname.local.domain to validaccount@mydomain.com.

 

[Stoiko Ivanov]

Glad you found a workaround!

Please mark the thread as 'SOLVED' - it helps others with a similar issue.

Thanks!