Problem: The PTR record does not match the HELO
, Network configuration:
• Main Mail server (Main Host): mail.example.com (IP: 192.168.1.10)
• Relay server (Relay Host): mx.example.com (192.168.1.11) The main host and relay host have the same external Ip.
• Both DNS records of A record refer to the same IP address.
Question:
1. How do I set up PTR and Helo correctly if the Proxmox Mail Gateway server transmits mail via Relay Host?
What I've already tried:
• Checked dig -x IP, I see two PTR records (mail.example.com ).
• but checking the error emails “PTR mismatch does not match the helo entry mail.exmaple.com . mx.exmaple.com”.
• SPF/DKIM are configured correctly.
I will be grateful for tips and recommendations!
, Network configuration:
• Main Mail server (Main Host): mail.example.com (IP: 192.168.1.10)
• Relay server (Relay Host): mx.example.com (192.168.1.11) The main host and relay host have the same external Ip.
• Both DNS records of A record refer to the same IP address.
Question:
1. How do I set up PTR and Helo correctly if the Proxmox Mail Gateway server transmits mail via Relay Host?
What I've already tried:
• Checked dig -x IP, I see two PTR records (mail.example.com ).
• but checking the error emails “PTR mismatch does not match the helo entry mail.exmaple.com . mx.exmaple.com”.
• SPF/DKIM are configured correctly.
I will be grateful for tips and recommendations!