Fitzpatrick, Ted wrote:

Why do some subscribers receive 2 emails from the mailing list? 1 email from listname@ourdomain, and a duplicate message from listname-bounces@ourdomain ?

I am guessing you have General Options -> anonymous_list set to Yes - otherwise at least one of these would be from the poster's address instead of listname@ourdomain.

There are actually two parts to your question. The listname-bounces address is set as the envelope sender of the message and also in the Sender: header for automated bounce processing. See the FAQ at <http://wiki.list.org/x/RoA9> for more on this.

The duplication is almost certainly caused by filtering/filing rules in the MUAs (mail clients) of the recipients of the duplicate messages.

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