if you use CDONTS or CDOSYS you should leave the virtual SMTP server installed as for an actual server, I would reccomend Mailenable. It's free, good and easy to use. Get it at http://www.mailenable.com and as far as components, I would also reccomend JMail BTW, if you use microsoft virtual SMTP server, change it's port if you use another mail server
yeah 10 concurrent connections that is what i noticed earlier when i try to configure my iis. it is a license agreement something i don't know if i can put 100 there.. ???