iOS devices are not able to receive emails via SMC Exchange ActiveSync proxy after an update to Sophos Mobile Control (SMC) v 2.5. If the devices contact the Exchange Server directly, no problems occur.
First seen in
Sophos Mobile Control 2.5.0
Within SMC 2.5 there is a communication issue with IIS 6 servers that are used by the Exchange Server and the SMC server. This means that iOS devices are not able to retrieve emails from the Exchange Servers via the Sophos Mobile Control EAS Proxy.
What To Do
To solve this issue, install the Sophos Mobile Control EAS Proxy 1.3.2 patch, available from the downloads section at Sophos.com.
After you have applied this patch, communications between the Sophos Mobile Control 2.5 Exchange Active Sync Proxy and the IIS 6 server should work again.