On 04/09/2019 15:26, @lbutlr via dovecot wrote: > A lot of mail that is not spam when it arrives WILL be spam when it is > forwarded as it will fail SPF, Fail DKIM, and any header checks will flag the > mail as suspicious. > > The only way to safely forward mail is to enclose it as an attachment, and > this is something users do not want.
IMO this is wrong. A classic forwarding (e.g. by .forward or by a MLM that does not alter Subject and/or body) will *not* break DKIM. Therefore it will pass e.g. DMARC... Just have a look at the postfix-users mailing list as a good example... Just my 2ยข. Juri
