Yes I agree.
most google groups add the additional info at the end of each message,
that makes DKIM invalid.
since google groups is a forwarding service who does a valid SRS, SPF
has no contribution to the DMARC validation.
So, almost every message forwarded by google groups has DMARC failed.
How google handle it?
It just replace the From: in header to google's list name, but keep the
real sender email in Reply to: header.
For instance, I sent an email from x...@mail.ru to google groups, google
delivery it to every member's mailbox. the DMARC will fail in this case.
So, Google just replace x...@mail.ru to x...@googlegroups.com in the
header, and try delivery the message then.
thanks.
On 2021/8/14 7:10 上午, raf wrote:
Lots of mailing lists add a bit of list-related text at the
end of each message (even though the same information
is in List- headers as well). That renders DKIM signatures invalid.
Perhaps the dovecot list does that. It doesn't seem to, looking at
the archives.
--
Ken N
https://blog.hoxblue.com/
