What email program are you using? Whats your domain email address? @example.com
Can we setup a remote session. I don't think I fully understand what you'e trying to do.
You're sending email from this IP address? 220.127.116.11When you try to send email, it doesn't get received on other end?
I will opt out and have someone else try to help you, as I'm not sure I'm fully capable of answering your question.
Hi there and welcome
What is currently the public IP Address of mail server, is it 18.104.22.168 ?
As this is not blacklisted for Spam, so it is likely something else.
And is it your mail server you host yourself?