HI, Locally i configured SMTP service in Windows 2003 Ent: This is only for internal application testing.We doen't require external. After configuring while testing i am getting below error, Please Help me: 220 testserver.abcdxyz.com Microsoft ESMTP MAIL Service, Version: 6.0.3790.39 59 ready at Sun, 9 Jan 2011 08:49:27 +0530 hello me 500 5.3.3 Unrecognized command

Hello Vijay Kumar, Check this http://support.microsoft.com/kb/323350 I hope this will help you. Thanks.

The command you are typing is wrong instead of HELLO type HELO. Please see the below link to use the smtp connection verification from telnet and all the commands listed for SMTP. http://technet.microsoft.com/en-us/library/bb123686.aspx http://www.virmansec.com/blogs/skhairuddin