Outgoing mail control with Postfix and KeyHelp

Discussions about the usage of KeyHelp.
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qMalte
Posts: 10
Joined: Sun 28. Jun 2020, 21:33
Location: Essen
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Outgoing mail control with Postfix and KeyHelp

Post by qMalte »

Hello all,

I'm using KeyHelp on my server and would like to configure Postfix to allow all SMTP users to send mail only from their SASL username.

So Postfix should check before sending an email out if the SASL username is the same as the FROM address.

I am looking forward to your answers.
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Florian
Keyweb AG
Posts: 1243
Joined: Wed 20. Jan 2016, 02:28

Re: Outgoing mail control with Postfix and KeyHelp

Post by Florian »

Hello,

the postfix option for this is reject_sender_login_mismatch
You should find several howtos about using this feature.
Mit freundlichen Grüßen / Best regards
Florian Cheno

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