In general, for security, you will be required to use a PIN to unlock your phone in order to use a VA Hosted Exchange account.
EAS will sync:
Folders
Mail
Contacts
Calendars
Tasks
All modern iOS devices support 'Exchange' or 'EAS' accounts without installing any apps.
Important: Configuring a VA Hosted Exchange account will probably force you to configure a PIN to unlock your phone. If you do not already have a PIN configured, you will be required to do so at the end of the above procedure.
https://support.apple.com/en-us/HT201320
This was done using iOS 8.1.3
On your iOS device, add a new Exchange/EAS/Corporate account for the new server.
Tap
Settings
Scroll down, tap
Mail, Contacts, Calendars
Tap Add Account
Tap
Exchange
Enter your
Email address,
Password and a
Description and tap
Next. Depending on IOS version it may only ask for
Email and
Description
Depending on IOS version it may claim a failure to verify. Hit Continue, Enter Server exchange.virtualarchitects.com
Leave Domain blank
Use your full email address as username
Enter your password
Tap Next
Tap
Save