[Mailman-Users] Bogus mail to list from JavaMail.yahoo

[Mark Sapiro]

On 3/6/19 2:55 PM, Mark Dale wrote:
> Hi All,
> 
> This may be a Postfix issue rather than a Mailman one, but the Mailman
> post log (snip below) is showing some relevant info, so here goes.
> 
> This morning there was a legitimate post to a list from a subscriber
> with a Gmail account.
> 
> Shortly after, there was a deluge of bogus posts (one every minute)
> repeating the same email to the list purporting to come from the same
> address.

Look in your mail logs and see where these posts come from and anything
else you can see. Also look in the list's
archives/private/redacted-listname.mbox/redacted-listname.mbox file at
all the headers from these posts.

I suspect some list member has some process that's echoing received
posts back to the list. It's not a simple .forward because that would
preserve the X-BeenThere: header which would prevent the message from
being reposted.

-- 
Mark Sapiro <mark at msapiro.net>        The highway is for gamblers,
San Francisco Bay Area, California    better use your sense - B. Dylan