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Reverse DNS does not match SMTP Banner

I am using the MDaemon Email Server. When I test my domain (mail.mydomain.com.sg) with MX Lookup, it shows the following error:

SMTP Banner Check Reverse DNS does not match SMTP Banner

How do I fix this error?

I already checked ptr:my Email Server IP Address and mx:my Email Server IP Address, it shows properly. I also added a SPF/TXT record in my domain.

please advice me. Thanks.

Solution

  • The PTR record should be the host name, not the IP address. The PTR record is the reverse lookup.

    Also, do you have the A record that points your HOST name to your IP address? You need that as well.