RE: Spam from admin@139.com

This is an updated outline of the vim_use spam problem.
Following some email exchanges, I am trying a few things to see
if I can find a solution and may have more updates.

The following uses "-at-" instead of "@" so the Google Groups
web interface will not hide the email addresses.

It appears that every user who emails a message to the vim_use
mailing list receives a junk mail from admin-at-139.com a few hours
later. Each individual can defeat that by flagging the mail as
spam so it is not seen in the future. However, the problem
should be fixed because it is confusing and irritating for each
new poster.

It looks like the following happened:
1. Someone subscribed to vim_use.
2. They set their email to forward messages to
number-at-139.com (where 'number' is a valid mobile phone
number in China).
3. They stopped using the mobile number (around July 2012?).
4. Another person was issued the number but (fortunately for
them), they have not activated the number to receive email.

When a user emails a message to vim_use, Google Groups delivers
that message to each member with the following in the header:
From: Username <user-at-example.com>
Reply-To: vim_use-at-googlegroups.com

The 139.com mail system should use the "Reply-To" address,
however they reply to the "From:" address to alert the sender
that the recipient has not activated their email.

This problem started around 9 July 2012.

John

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