Originally posted here by c0br4
If you are running XP Professional then you can install the SMTP server by going to Control Panel > Add/Remove Prgrams > Add/Remove Windows Components > Internet Information Services (IIS) > SMTP Service just tick the SMTP Service box and follow through the usual next.... OK.... yes I am sure... insert disk.... you know, the usual... it can then be configured from Control Panel > Administrative Tools > Internet Information Services, this is fairly smple to configure and within 5minutes you should have a fully functional SMTP server...... good luck, any problems let me know, I am here to help

James
The IIS SMTP server is not a full feature mail program as it does not give you a way to retrieve the mail. It does everything required for SMTP, but you can't associate any mailboxes with it. It can send, and accept mail, but only to relay it.


"IIS in Windows Server 2003 includes a full-featured SMTP virtual server that you can use to route mail on your internal network. The SMTP virtual server can also accept mail from the Internet. Although the SMTP Service does not include an easily accessible mechanism in which to retrieve mail, it can play a vital role in accepting mail from the Internet and relaying it to your SMTP/POP3 server. You can configure the SMTP virtual server to accept mail for the domain to which the computer belongs, and for other domains."

http://support.microsoft.com/default...b;en-us;324272

I'd rather use a unix machine as a relay as sendmail and the other unix SMTP mail servers give you better control over what the SMTP server is doing. The IIS SMTP server is extremely limited.