How can I configure TB HELO/EHLO message?

Signs of TB on my server of mail than [< IP address >]. Strictly speaking, it is 'illegal', especially if it is a reserved (non-public) address, since EHLO/HELO is supposed to enable the machine to be identified. How can I get to identify with a FULL domain name?

Reason:
If I can do that, I can set up my server to delete connections
customers sending HELO/EHLO [< IP address >] that would strengthen the defense of my SPAM.

You are welcome.

Tags: Thunderbird

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