Hi Guys,

Wondered if someone could guide me please.

I have Mercury set to forward one email address here to a gmail account. Until I enabled SSL in Mercury E, everything was working fine. Now I'm getting this:

The attached message has failed delivery and has been referred
to you as postmaster. The following error report or reports
were given to explain the problem:

   *** [redacted]@gmail.com
550-5.7.25 [redacted] The IP address sending this message does not have a PTR

It this something I have to do in Mercury, or is it a DNS setting with the provider through which I have my main domain?

A mail transfer agent is expected to have PTR record assigned to the IP address, and as you say you will need to ask your Internet Service Provider to create one.