Additional checks for external banner

[PatxD]

My Mailscanner is the second relay internally. Since the "real" external IP is not directly connecting, I can't use "and host:" as it catches the directly connecting one, which is internal.

Example of external.message.rules:
From: [email protected] and host:mail*.sub*.mytest.net no

Is there a way to do that right now ?
If not, is it something that is doable ? I'm not opposed to coding it, but I would need some guidance.

Bonus if we could add "and SPF:pass" or something like that.

[github-actions]

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