Here is my thoughts, you said
"I have only Exchange Data, not POP, IMAP or SMTP." Microsoft Exchange uses MAPI Protocol. I don't believe the Net library supports MAPI per the apache documentation:
http://commons.apache.org/proper/commons-net/
It does supports SMTP, On the server you have to allow authenticated users (
using SMTP Protocol) on a certain port to send "Not Open Relay" through the port 25,26,
443 etc... Also make sure the user has permissions to send messages.
"because the smartphone Email Apps only server, domain, user name, password and port, no specific POP and SMTP data."
Smartphone Email Apps are using the "MAPI Protocol"
That is how once you are connected to the exchange server, you can access the following:
Email, Calendar, Contacts, Task, Notes.
Hope this helps.