Re: [exim] unblocking gmail

> From: Phil Pennock

> I am getting strongly tempted, again on my personal systems, to turn on
> a hard-mandate that a message must have a verified DKIM signature if the
> From: address is @gmail.com and there's no sign of a mailing-list in the
> headers

Quite a few people on a mailing list I run send private letters
with "From: ...@gmail.com" via their ISP's relays.
One of reasons is that many listservers including yahooGroups
don't change Message-Ids, and gmail discards what looks like
duplicates: if a member sends a message to mailing list via
gmail's relay ("SMTP server") then it keeps a copy, and when
the message comes to the member back from mailing list
(even if edited by the list moderator), gmail sees the same Message-Id
as in the already stored copy and discards the "duplicate", so the
member doesn't see whether the message was approved by moderator at all
and if it was edited by a moderator. Some moderators reply in the edit,
or reprimand the member for some rules transgression. The solution is
to send via ISP's relay, not via gmail's.