Hi, one of our clients recieved an email bounce so we applied for their Dedicated IP to be White Listed but we keep getting deniled for :
No Reverse Hostname associated with your IP address.
We checked the reverse DNS and it was set to mail.group3aviation.com so we changed it to just group3aviation.com but we still were denied.
We checked the SMTP banner and everything looks good.
Can you please let us know what we need to do.
Thank you