When you try to access SonicWALL SMA (Secure Mobile Appliance) using NetExtender you get
“SonicWALL – Can not access the appliance for Security. Please contact administrator”
Make sure you type the domain correctly in the NetExtender and with the right case.
The domain is Case Sensitive. So if your domain on the SMA is configured as Domain1.com, then you need to enter as is; Domain1.com, NOT domain1.com or Domain1.Com