Hi Igor, changing the subject line by Mailman breaks the spam protection procedures and therefore the emails are most likely to be classified as spam to Google and Co. and our emails would be blocked. Reversing the changes would create the problems we are trying to eliminate with these measures. However, you can see from the sender that the emails come from our mailing list. If you have set up an email rule, you can change it from the subject line to the sender (email from), because the sender also contains the abbreviation Cin. With this you would have your desired result. Sam Am 10.07.20 um 09:02 schrieb Igor BEGHETTO via Cin:

Hi Sam! Is it possible to see the abbreviation [Cin] in the email's object, again? Like you, I receive some email and when I see [Cin] on an email I move it in a "Arrive_Cin-GG" folder that I created. If [Cin] is no more added to the object it is more difficult to recognize at first sight where it comes from. Thanks!

IgorBeg

Il 10/07/2020 03:09, Sam via Cin ha scritto:

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Hi Cinelerra friends,

As some of you have already noticed, modifications to Mailman were necessary to get Gmail users back. To avoid spam, the major email providers use methods like SPF, DKIM and DMARC.

We have adapted our mailing list so that the subject line and footer are no longer changed, i.e. the abbreviation [Cin] and the old familiar footer are missing. Thus DKIM is not broken and we are not classified as spam. We have also made other changes to meet modern requirements. Furthermore, only the mailing list address appears as the sender.

We will gain more experience with the new procedures and if necessary we will make further optimizations. If you have any problems or other questions, please contact me.

Sam

Hi David, thank you for this info. It is indeed a help. I have previously received very contradictory information on this subject from other sources. I have already configured Mailman correctly according to the instructions you recommended, but I was not aware of the option to remove the DKIM header. If the DKIM header can be removed, I think that the prefix [Cin] and the footer can be reactivated, because the original DKIM is removed. So my understanding is, if I'm wrong, please let me know. We are trying this option and I will follow the next days how Mailman behaves. Thanks again for the tip. @IgorBeg Since I found a way to solve the problem with DKIM, I have activated the prefix and footer. We will see how Mailman and Gmail will behave with these settings. Sam Am 10.07.20 um 15:09 schrieb David Given:

Trying to preserve the original DKIM signature is unlikely to work --- Mailman tends to regenerates the headers and body from parsed copies so the details of the formatting can change, which breaks the signature. The only thing which actually works here is to strip the DKIM signature (preferably after checking it) and resigning the message when Mailman sends it. See for example https://doc.coker.com.au/internet/dkim-and-mailing-lists/.