How customize email header h= of DKIM-Signature?

Your software
My Mautic version is: v2.15.3
My PHP version is: PHP Version 7.2.26

Your problem
My problem is:

how customize email header h= of DKIM-Signature?

DKIM should be added through the email provider (e.g. Amazon SES, Mailjet, … or even Gmail)

Hi @ekke , the mautic include the “List-Unsubscribe” right? and the “List-Unsubscribe” is include in email header h= of DKIM-Signature

my server is not add header DKIM-Signature, but see what i received from email mautic:

DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple;; s=202002; t=1582207775; bh=B18ORY4cRHVv1Hp8DnkqweUhipBwaFgTEfuLQw6VoUs=; h=Date:Subject:From:Reply-To:To:List-Unsubscribe:From; b=Q2LvlCiHOfC3lVuFIxUA6z9tpY8mEyNgjJPkp6S6LFvhQJCqWxnjLAqBZhjR4Pu6z

is there any way to disable this header in mautic?

does anyone know how to disable the dkim-signature header from mautic?!

ok, now at least I understand what you’re trying to achieve.

I am pretty sure, though, that DKIM is not added by Mautic (it just can’t do that - if nothing else, because there is no place to add the private key).

Thus: I guess you are using sendmail delivery, right? Switch to PHP delivery and you should be fine.
Otherwise, please point me to where I am mistaken - I am eager to learn!

Hi @ekke thanks for the help, in config the mautic, i use the option “Other SMTP Server” (SwiftMailer)
swiftMailer add “DKIM-Signature”.
I will try the option “PHP Mail”