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mailcow smtpd_banner change

CCkruijntjens
Moolevel 25
Jan 23, 2022
Post #1 Sunday, January 23, 2022 3:33 PM

Hi all,

How can man change the smtpd banner?

i tried to add this
smtpd_banner = $myhostname ESMTP Postfix

to the data/conf/postfix/extra.cf file. However the changes wont stick?

pkernstock
- Forum Staff
- volunteer
Moolevel 55
Jan 23, 2022
Post #2 Sunday, January 23, 2022 4:23 PM

I don’t believe we officially support changing the smtpd banner, as the functionality like anonymizing headers

https://github.com/mailcow/mailcow-dockerized/blob/694e3d652fb5eeb2ea030e21ca0b23ad0e7382a5/data/conf/postfix/anonymize_headers.pcre

depends on this and would require modification as well.

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CCkruijntjens
Moolevel 25
Jan 23, 2022
Post #3 Sunday, January 23, 2022 5:22 PM

Hi,

Ok thanks for your reply

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mailcow smtpd_banner change

Ckruijntjens

Hi all,

How can man change the smtpd banner?

i tried to add this
smtpd_banner = $myhostname ESMTP Postfix

to the data/conf/postfix/extra.cf file. However the changes wont stick?

pkernstock

I don’t believe we officially support changing the smtpd banner, as the functionality like anonymizing headers depends on this and would require modification as well.

Ckruijntjens

Hi,

Ok thanks for your reply💪👍