Where is your Exchange Server or SMTP server located? Douglas Jensen Douglas.Jensen@xxxxxxxxxxxxx <mailto:Douglas.Jensen@xxxxxxxxxxxxx> Voice (952) 402-9821 Fax (952) 402-9815 Network Administrator Scott Carver Dakota CAP Agency, Inc. 712 Canterbury Road Shakopee, MN 55379 www.capagency.org <file:///C:/Documents%20and%20Settings/djensen.SCDCAP/Application%20Data /Microsoft/Signatures/www.capagency.org> ________________________________ From: exchangelist-bounce@xxxxxxxxxxxxx [mailto:exchangelist-bounce@xxxxxxxxxxxxx] On Behalf Of Tee Darling Sent: Wednesday, January 31, 2007 1:53 PM To: isalist@xxxxxxxxxxxxx Cc: exchangelist@xxxxxxxxxxxxx Subject: [ExchangeList] Error "Interface not registered" My Outlook 2003 is behind ISA 2004 server. Every time I try to send an e-mail, I receive the error "Interface not registered". Has anyone seen this error before? If I reply to some of my old e-mails, I do not receive the error. It only happens when I typed in a new e-mail address. Now people don't seem to receive my e-mails when I reply to their old e-mails. Anyone seen the error before and how to resolve it? All searches on Microsoft, google and some other areas on the Internet have turned out to be negative. Thanks. Tee