iphone netvigator help please

Posted by 5 stars (16 days ago)

I can receive but can not send emails through my iphone using netvigator.
One of my friend said to put on th eoutgoing mail corpmail1.netvigator.com
but it does not work. So does it has to do with putting capital letters or not?
Then user name do you put log in name or full email address. Using SSL or not?
Server port nunber?
I hope someone can help
Many thanks

(I am based in Hong Kong)