Cannot disable outbound Received header in Haraka 3.1.1

[qiaom3322b-ship-it]

Hello Haraka team,

I am using Haraka 3.1.1.

Following the documentation and past Pull Request (#2855), I tried to disable the outbound Received header by adding the following to smtp.ini:

[headers] received_header=disabled

However, when sending emails, the Received header is still added, for example:

Received: (Haraka outbound); ...

Is this setting officially unsupported in Haraka 3.1.1?
If it is not supported, are there plans to add it in a future release?
Also, if there is a recommended way to disable the outbound Received header in the current version, I would appreciate your guidance.

Thank you for your time and help.

Best regards.

[msimerson]

The correct setting would be:

add_received=false

[qiaom3322b-ship-it]

Hello Haraka team,

Thank you for the clarification regarding add_received=false.

I have tried using received_header=disabled and it successfully removed the outbound Received header like:

Received: (Haraka outbound); Mon, 29 Sep 2025 23:17:13 +0900

However, another Received header is still added, for example:

Received: from localhost ([0.0.0.0]) by mail..com (Haraka/3.1.1) with ESMTPSA id FB5DC283-80AF-4012-B8AD-CA0FE7CFE2CD.1 envelope-from <postmaster@.com> tls TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256 (authenticated bits=0); Tue, 30 Sep 2025 00:14:44 +0900

Could you please advise if there is a supported way to completely remove all Received headers in Haraka 3.1.1? If not, is there any recommended workaround?

Thank you for your guidance.

[msimerson]

There are two settings available to control Received header additions. In connection.ini, you can set:

[headers]
add_received=false

and in outbound.ini you can set:

received_header=disabled