Issue mail server not properly configured - leading to block

[leopixelstudios]

Server operating system version

AlmaLinux 8.10 (Cerulean Leopard)

Plesk version and microupdate number

Plesk Obsidian 18.0.77 Update #2

Hello! I am going nuts on this issue.. I've had a mail server for a couple of years now without any issue.. last week I've added a new domain that needed mail services as well.. since then I've been blacklisted in spamhaus... Now, the part that I'm pulling my hair over... I wanted to dispute the blacklisting with spamhaus BUT, what they say is an error, is not something (or I think) I can fix..

The HELO points to the OVH server name
the IP address is of course the OVH server IP Address

the mail server is mail.xyz.com with ip address 1.2.3.4
the rDns point back to the domain mail.xyz.com

when I sumit my request to spamhaus.. that's what they give me ....

The A record for the HELO domain does not match the sending IP address.
Of course it won't!! I don't have the server name in my a record, I have the domain name

The reverse DNS domain does not match the HELO domain.
the reverse DNS points to the domain name, not the server name..

what can I do to fix this!
I have another domain with an email service with the same type of configuration (except it's their domain name) .. so I'm afraid they'll get blacklisted as well


thx.