Hello,
When my mailserver talks to other MTA, it certainly will issue a HELO
command.
Saying the hostname after HELO is: mail.host.com, which points to an IP.
But this IP's PTR doesn't point back to the hostname above.
That's saying, the IP does have a PTR like web.host.com, and
web.host.com points to that IP correctly.
But my mailserver doesn't use web.host.com as HELO hostname, instead
it's using mail.host.com which has correct A RR, though that IP address
doesn't resolve back to mail.host.com.
Does this have an adverse effect on sending behavior?
Thank you.
Peter.
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