Pete, sorry that I didn't mention that I already searched for addresses from these domains (using various wildcard combinations to make sure). At 03:46 AM 7/11/2007, you wrote: >check for subscribers from: > >[Declude.]Interceptor.com >nozonenet.com > > >At 00:50 7/11/2007 Wednesday, Stephen C. Nill wrote: > >Colleagues, > > > >I have a pesky problem that maybe a set of fresher eyes can help > me with. When posting to one of our lists, the posting makes it to > the list just fine, but the following is sent back to the sender: > > > > >>Return-Path: <[log in to unmask]> > >>Received: from Declude.Interceptor.com > (68.208-100-26.nozonenet.com) by charitychannel.com (LSMTP for > Windows NT v1.1b) with SMTP id <[log in to unmask]>; > Tue, 10 Jul 2007 21:44:37 -0700 > >>Return-Path: <[log in to unmask]> > >>Received: from charitychannel.com ([216.132.135.170]) > >> by Declude.Interceptor.com > >> with hMailServer ; Tue, 10 Jul 2007 23:43:47 -0500 Stephen C. Nill Founder & Chief Executive Officer CharityChannel [log in to unmask]