I have seen few Windows Mail Servers like IT House Mail Server http://ithouse.com/ I've it's old 1.04 ver and it has only file(MailServer.exe) & works very well.

I want to know Is there any basic functionality inbuilt in windows which enables the vb or vb.net code to work as Mail Server(to work like SMTP & POP3) and which is capable to send mails not even in local network even to Gmail, hotmail, yahoo (outside the local network) etc.

If any body knows plz let me know in detail. I am greatful to you.

Thanks in advance