[Lnc-business] new LNC-Business email delivery problems

[Alicia Mattson]

*GMail Users Take Note:*

As I have noted before, the DMARC policies in use by Yahoo and AOL do not
like our email list.  Specifically they don't like Yahoo/AOL users sending
to the list and the list then delivering back to Yahoo/AOL users.  I am
used to getting about 7-8 bounce notifications each time one of our members
sends from a Yahoo/AOL address.  The list tries to deliver it to 7-8
Yahoo/AOL users, and they bounce back with complaints.  I have previously
warned Yahoo/AOL users that they should regularly check the list archives
for any messages that may not have been delivered to them.

*Now the problem has expanded.*

Today I got 15 bounce notifications when Mr. Riemers sent from a Yahoo
account.  It looks like Gmail is now refusing to deliver messages from
Yahoo accounts, sent through the list, and routed to Gmail recipients.
Their complaint reads as follows:

host gmail-smtp-in.l.google.com [...]
    SMTP error from remote mail server after end of data:
    550-5.7.1 Unauthenticated email from yahoo.com is not accepted due to
domain's DMARC policy. Please contact administrator of yahoo.com domain if
this was a legitimate mail. Please visit
https://support.google.com/mail/answer/2451690 to learn about DMARC

I am one of the Gmail recipients, and my inbox did not receive a copy of
Mr. Riemer's latest email, which can be seen near the bottom of the 2016
message list in the archive at:

http://hq.lp.org/pipermail/lnc-business_hq.lp.org/2016/date.html

The problem is not occurring when Gmail users send to the list, only when
Yahoo/AOL users send to the list.

Until a solution is found, it seems that both Yahoo and Gmail users need to
routinely check the archive to see any messages sent by Yahoo/AOL users.

-Alicia
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