We just started getting this error message in the Application log this morning around 8:30. I found a Microsoft KB article 322234 that describes it perfectly. My problem is that I know enough about ISA to be dangerous and I can't find the SMTP Commands tab anywhere. I've looked at our filters, but can't find anything. Help, please!! Terri L. Jones Vice-President Jones ...and associates PO Box 2593 Jonesboro AR 72402 870-802-2029 870-935-7619 fax