>I am faily new at list owning and have not received this message before. > Can anyone tell me what it means and if I should be concerned.? > ----- Transcript of session follows ----- >553 zeus.newedge.net config error: mail loops back to myself >554 <[log in to unmask]>... Local configuration error E-mail the [log in to unmask] if you can plus cc: postmaster @ each of the following sites: mail.isisnet.com smtp.atcon.com accounting.atcon.com auth.atcon.com Then set the subscriber to NOMAIL pending feedback from one of the postmasters. Keep a copy of your correspondence in case the user complains. Then let them know of the poor service their ISP has provided them for a fee, while you demonstrated due diligence in trying to contact a cognizant network administrator. /Pete Weiss at Penn State