Looke like M$'s mail handler fails to proeprly apply the RFCs (surprise surprise) to MX records with priority '0'. This is supposed to be the highest precedence but M$ treats it as a precedence to ignore. So, for those using Secure DNS (SDNS) and using MX records, sdns has been downgraded to the M$ 'standard' by changing the default MX precedence to 1 instead of 0. To download the update: http://heat.ca.sandia.gov/ => Software => SDNS Secure DNS - 2002-07-13.tgz FC --This communication is confidential to the parties it is intended to serve-- Fred Cohen Fred Cohen & Associates.........tel/fax:925-454-0171 fc@all.net The University of New Haven.....http://www.unhca.com/ http://all.net/ Sandia National Laboratories....tel:925-294-2087