Dell SonicWall SRA 4200 Administrator's Manual page 30

In the SRA appliance, create an offloading portal with the name webmail.
Step 1
Set the Scheme to Secure Web (HTTPS).
Step 2
Set the Application Server Host to your Exchange server, for example webmail.example.com.
Step 3
Set the virtual host name, for example, webmail.example.com. The virtual host name should be
Step 4
resolved by the DNS server. Otherwise, modify the hosts file in the Android phone.
Select the Enable ActiveSync Authentication check box. Leave the default domain name
Step 5
blank or input webmail.example.com.
30 | SRA 6.0 Administrator's Guide