SOLVED Confused over reverse DNS when domain on a different IP


Active Member
Sep 25, 2006
I have got myself totally confused:

Example is on IP111.111.111.1

Domain: is on IP

This is necessary because WHMCS is with and has an SSL certificate.

When testing With MX Toolbox, I get the following results for

SMTP Reverse DNS Mismatch Reverse DNS does not contain the hostname
SMTP Banner Check Reverse DNS does not match SMTP Banner
SMTP Transaction Time 5.500 seconds - Warning on Transaction Time
SMTP Valid Hostname OK - Reverse DNS is a valid Hostname
SMTP TLS OK - Supports TLS.
SMTP Connection Time 1.688 seconds - Good on Connection time
SMTP Open Relay OK - Not an open relay.

other domains on that share the main IP are fine.

Please de-confuse me please!
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