Resolved Non delivery mails notifications

[JuanCar]

Server operating system version

Almalinux 9.4

Plesk version and microupdate number

Plesk Obsidian 18.0.62 #1

I've migrated my plesk to upgrade OS from Centos to Alma
The mail server now is Postfix.
I have a some problems:
1. Postfix doesn't notify about undelivered email
2. Notifications mails from server sent to gmail account are rejected (I know it after looking in Action Logs).
3. I've set an email for my admin in my domain and a external email, but the notification use external email as admin mail
Gmail send two answers first:
Your email has been blocked because the sender is unauthenticated
and a second one telling
Gmail has detected that this message is 550-5.7.1 likely unsolicited mail

In /usr/local/psa/admin/conf/panel.ini I added
[notification]
senderAddress=[email protected]

I have set DKIM, SPF, DMARC. And I can send email to gmail from my server using my email client.

Any idea?
thanks

 

[JuanCar]

Solved,
Migration does not keep full hostname, so the form files was an unauthorized sender. I changed it and know notifications are sent ok.