Name: Your Name (What ever you want)
Email: Your username
Password: Your adexec.com account password
Description:
Click Next Button
Hostname: imap.mail.com
Username: Your username
Password: Your adexec.com account password
Hostname: smtp.mail.com
Username: Your username
Password: Your adexec.com account password
Click Save Button
Use SSL: Yes
Authentication: Password
Server Port: 993
Use SSL: None
Authentication: Password
Server Port: 587
You can login adexec.com and Signup for adexec.com new account on your iPhone from here.