Postfix confg - smtp banner

Trying to work out a couple postfix things, mainly getting smtp banner mismatch.

hostname: my.domain.tld
reverse dns for ip: my.domain.tld
mail from: mail.my.domain.tld
(also tried changing the first two to mail.my.domain.tld but didn’t change anything)

I couldn’t seem to find them in the module page but in main.cf $myhostname and #smtpd_banner are commented out, will uncommenting those do it or is there somewhere else I should be looking?

thanks

SYSTEM INFORMATION
OS type and version almalinux 9.1
Webmin version 2.013
Virtualmin version 7.5
postfix 3.5.9

@Lobstrosity,

Please provide the actual error you are receiving…

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