That did it. On 5.5 there is a setting to send all messages through another server. Site, configuration, Internet mail service, connections, message delivery. Select deliver all messages to host and put in the IP address of the host. We use a Sunbox running Send Mail for this. Byron Kendrick -----Original Message----- From: John Tolmachoff (Lists) [mailto:johnlist@xxxxxxxxxxxxxxxxxxx] Sent: Monday, December 13, 2004 9:30 AM To: [ExchangeList] Subject: [exchangelist] RE: New server not resolving names. http://www.MSExchange.org/ OH boy, Exchange and Imail. In Exchange 2000, there is a setting "send all unresolved users to this server" type setting. Is there such a setting in Exchange 5.5? John Tolmachoff Engineer/Consultant/Owner eServices For You