Mark Sapiro wrote:
To understand what's going on, We would like to see the complete, raw response message. Also, the headers of the message sent to the -request address, in particular the Content-Type: header of the first text/plain part and its charset param.
I didn't check the source headers... Mailman isn't the issue, my mail client (Evolution) is the problem. Messages sent to the -request@ with Subject: help and message body with my mail signature are working fine. I received the expected response from Mailman.
Messages sent to the -request@ with Subject: help and empty message body, gives the random characters response. Instead of leaving the body empty, Evolution paste "Cgo=" into the message body. Mailman reply with the expected "No such command: cg0k" and Evolution couldn't decode the message. Long story short, don't use Evolution ;-)
Thanks for pointing me in the right direction!
Mail headers: Sent message -request@ (with empty body)
Message-ID: <eaa8bc6bec172bf3e19700959d6f86f637a3d59c.camel@domain.tld> Subject: help From: Jeffrey <jeffrey@domain.tld> To: test-jeffrey-request@domain.tld Date: Mon, 17 Feb 2020 10:54:13 +0100 Content-Type: text/plain User-Agent: Evolution 3.34.1-3 MIME-Version: 1.0 Content-Transfer-Encoding: base64 X-Evolution-Identity: 1f54715bb67ff0bd5b87ec47786956d762aec607 X-Evolution-Fcc: folder://f23e08ef4c9736554f0b631ce301539d32916444/Sent X-Evolution-Transport: 6fd443d2352de0b9c1126fe4334605581b1903c2 X-Evolution-Source:
Cgo=
Response message
Subject: The results of your email commands From: test-jeffrey-bounces@domain.tld To: jeffrey@domain.tld Content-Transfer-Encoding: base64 MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Message-ID: <158193325438.30764.17876047045035004661@domain.tld> Date: Mon, 17 Feb 2020 10:54:14 +0100 Precedence: bulk X-Mailman-Version: 3.2.1 X-Evolution-Source: f23e08ef4c9736554f0b631ce301539d32916444
The results of your email command are provided below.
Original message details: From: Jeffrey <jeffrey@domain.tld> Subject: help Date: Mon, 17 Feb 2020 10:54:13 +0100 Message-ID: <eaa8bc6bec172bf3e19700959d6f86f637a3d59c.camel@domain.tld>
Results: confirm - Confirm a subscription request. echo - Echo back your arguments. end - Stop processing commands. help - Get help about available email commands. join - Join this mailing list. leave - Leave this mailing list. stop - An alias for 'end'. subscribe - An alias for 'join'. unsubscribe - An alias for 'leave'. No such command: cg0k
Done.