Hi,
I'm using mailman 3.3.8.
Some messages with attachments from Google users get rejected by spam filters because of invalid DKIM signatures.
It seems, that mailman alters some lines in the body. Here an example:
Original message:
--8<---------------cut here---------------start------------->8--- Lines: 2031
--000000000000f846c505fc494b7a-- --000000000000f846c705fc494b7c Content-Type: application/pdf; [...] Content-Disposition: attachment; [...] --8<---------------cut here---------------end--------------->8---
Altered message:
--8<---------------cut here---------------start------------->8--- Lines: 2032
--000000000000f846c505fc494b7a--
--000000000000f846c705fc494b7c Content-Type: application/pdf; [...] Content-Disposition: attachment; [...] --8<---------------cut here---------------end--------------->8---
An empty line is added, and the spaces after the semicolons are removed.
Perhaps related to https://gitlab.com/mailman/mailman/-/issues/1079.
What could I do please, to prevent such modifications of the body?
TIA for any help,
Peter