On Wed, 26 Feb 2020 08:07:03 -0500 Carl Hartung <opensuse@cehartung.com> wrote:
On Wed, 26 Feb 2020 10:19:40 +0100 Per Jessen wrote:
8< - - - - - snipped - - - - - >8
d) sent to a mailserver, in this case one of Yahoo's.
e) Yahoo does an SPF check, which fails as the mail from @paul-neu... is now being sent by mx.suse.de which is not listed in the SPF record.
f) the policy says to refuse any mail not coming from a listed server, so Yahoo correctly / immediately bounces the mail.
g) the bounce eventually ends up on the list server being flagged as "could not deliver to paka@".
Hi All,
Yahoo Mail is notoriously hypersensitive, and, it's users can only declare specific senders (i.e. the "From:" address) or domains as 'safe' or 'approved.'
In this case, if the Yahoo Mail user declares "opensuse.org" as 'safe' or 'approved,' barring any other as yet undisclosed factors, this would most likely mitigate the problem.
But the problem is not just with Yahoo, and indeed it doesn't seem like Yahoo are doing anything wrong. Plus why should all (non) recipients of these messages have to do special things?
regards,
Carl
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