[Mailman-Users] DMARC and Bellsouth, etc.

Larry Kuenning larry at qhpress.org
Wed Apr 16 19:57:12 CEST 2014

On 4/16/2014 12:51 PM, Lindsay Haisley wrote:

> What I'm advising list admins here, which puts a band-aid on the
> problem, is to put all yahoo.com subscribers on moderation, effectively
> making them read-only subscriptions.  Also go through your membership
> list and clear any nomail disablements with a "[B]" beside them.  We're
> also advising yahoo.com list subscribers to get a Gmail account (as free
> and easy to get as a Yahoo account)

Query:  On a very low-traffic mailing list (i.e. one where the list 
admin doesn't think it too much trouble), would it be a reasonable 
workaround for the list admin to paste the content of a 
message-to-be-moderated (i.e. one From: a yahoo address) into a new 
message _of his/her own_ and send _that_ to the list?  This message 
could include the original From: address _in its body text_ (not its 
headers) along with a brief reference to the yahoo problem to explain 
the unusual format.

 From what I've read here so far, I think this would succeed in avoiding 
the usual yahoo-generated problems.  However, I can foresee a couple of 
drawbacks (besides the extra work for list admins):

1.  Other subscribers replying to the message will get MUA-generated 
text saying "Larry List-Admin wrote" instead of "Sonia Subscriber 
wrote".  Those who pay attention and take a little trouble can change 
that before clicking Send, but many won't.

2.  Similarly, other subscribers wanting to reply privately will send 
their replies to Larry List-Admin instead of Sonia Subscriber if they 
aren't careful (and some of them won't be).  The list admin can forward 
these replies, but in a few cases they may contain confidential material 
that the admin shouldn't have seen.

Larry Kuenning
larry at qhpress.org

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