Running server 2003 SP2 with Exch. 2003 SP2 I've created MX records on my hosted domain name space. I am receiving emails fine, any idea's why I cant send out any email. I keep getting this error. Jonathan Roberts on 7/27/2008 11:14 AM The message could not be delivered because the recipient's destination email system is unknown or invalid. Please check the address and try again, or contact your system administrator to verify connectivity to the email system of the recipient. <MAIL032.mail.lan #5.1.2> Thanks guys.

Have you configured an SMTP connector for outbound email to the Internet? Can your Exchange server correctly resolve DNS records for public hosts on the Internet?

Thanks for the reply Jeff. I guess I got a little impatient, after about 30 min. I was able to receive email's just fine. Thanks again Jeff!!