Am 26.10.2023 um 16:16:00 Uhr schrieb David Verdin via mailop: > But why did they write to this address? It's only when I had a > videoconference with my user that I could see that, in her Outlook > client, when displaying a message from the list, it read something > like "[email protected] <[email protected]>". > And hen clicking on it, the "-request" address was emphatized. It is > therefore very easy to copy this address and paste it in a new > message.
Then it is a client error. > The "-request" address only appears in the "Sender" field. As per RFC > 2822 : "The "From:" field specifies the author(s) of the message, > that is, the mailbox(es) of the person(s) or system(s) responsible > for the writing of the message. The "Sender:" field specifies the > mailbox of the agent responsible for the actual transmission of the > message." Reply also must check for Reply-To which must be set to the list address to make replies go to the list. > Absolutely no reason to display it to end user as the actual mail > originator. It makes sense to give it as information, but displaying > the way it is to end users is totally misleading. I don't know Outlook, but Claws Mail shows those headers completely. > In order to stop mayhem in those lists, I had to make Sympa remove > the "Sender" header from outgoing emails. But who knows what side > effect will this change have for deliverability ? IIRC Sender: will be used in SMTP envelope MAIL FROM: instead of From: when sending the mail. This will result in SPF failure if your MTA sends the message with From: <[email protected]> and MAIL FROM:<[email protected]. _______________________________________________ mailop mailing list [email protected] https://list.mailop.org/listinfo/mailop
