[ Adding discuss list back as I think this is of general interest ) On Fri, Jan 12, 2024 at 02:34:52PM +0000, Luís Moreira de Sousa wrote: > Dear Sandro, > > I am not qualified to opine on the DKIM configuration, but I would question > the removal of the prefix. All other pipermail list I am subscribed to add a > prefix to the subject. Could you explain why it had to be removed? Will this > decision affect the other OSGeo lists?
DKIM is a standard by which the mail server applies a cryptographic signature to some elements of an email, to ensure it is not tampered with. Your mail (the one I'm reply to) contained the following signature: DKIM-Signature: [..] d=protonmail.ch; h=Date:To:From:Subject:Message-ID:In-Reply-To:References: That means that your mail server (protonmail.ch) applied a digital ignature on the following email headers: - Date - To - From - Subject - Message-Id - In-Reply-To - References The mail servers involved in getting the mail to me checked your server signature and added an header with the outcome of the verification: Authentication-Results: hst.kbt.io; dkim=pass (2048-bit key; secure) Authentication-Results: spool.mail.gandi.net; dkim=pass So both "spoo.mail.gandi.net" and "hst.kbt.io" where happy with your signature. If Mailman injected a prefix in the "Subject" header (which is among the ones signed by protonmail.ch) the servers of recipients would detect the mail was modified and thus will consider it suspicious. --strk;
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