ed, sorry I asked an ambiguous question! your answer worked for the case that harris.com was unambiguous. I was trying to ask what if the "harris.com" part of "user@harris.com" produced ambiguous results? Vint At 05:09 PM 7/30/2002 -0700, Ed Gerck wrote: >"vinton g. cerf" wrote: > >> ed, how would you suggest to resolve an email address if it returns ambiguous results? >> Vint Cerf SVP Architecture & Technology WorldCom 22001 Loudoun County Parkway, F2-4115 Ashburn, VA 20147 703 886 1690 (v806 1690) 703 886 0047 fax