|OS type and version
Hello, good morning, I will try to explain my problem as best as possible.
I have my server on centos7 with webmin and virtualmin php 8.0 + postfix, imap/op3 dovecont in which I am hosting several client domains which work normally.
In domain2.com there is a DNS configuration since the client has his email with Google Works, for which in the DNS configuration a change is made in the mx by lso aspmx from Google
When sending emails from any address on @domain1.com to any address on @domain2.com I get the error message:
Some of the recipients did not receive your message.
Sent on: 01/26/2024 9:29 a.m. m.
The following recipients cannot be reached:
'email@example.com' on 01/26/2024 9:29 a.m. m.
Server error: '550 5.1.1 <firstname.lastname@example.org>: Recipient address rejected: User unknown in virtual alias table'
emails from domain1.com have been sent from roundcube and from outlook, they show the same error
WHAT I HAVE TRIED:
- in the list of servers in postfix configuration mail aliases option, I have added the mail alias email@example.com to the list.
- I have restarted postfix.
- I have carried out sending and receiving tests
I urgently ask for help, please if someone can give me some light on what I should do since I have many communication problems between these 2 domains.