(SDR 358704) In BlackBerry® Enterprise Server 4.1 SP6, the hard-coded flow control timeout limit for the BlackBerry MDS Connection Service is 30 minutes. As a result, push messages sent to the BlackBerry device might not get delivered if the device is out of coverage for longer than the flow control timeout limit.
(SDR 326882) In BlackBerry Enterprise Server 4.1 SP4 and later, users might not be able to browse to HTTPS websites that are self-certified.
(SDR 310999) In BlackBerry Enterprise Server 4.1 SP6, if you configure a proxy server to prevent users from accessing a specific web site from their BlackBerry devices, the BlackBerry MDS Connection Service tries to connect to the web site directly if the proxy server returns an "HTTP 403 Forbidden" error.
(SDR 284969) In BlackBerry Enterprise Server 4.1 SP6, when a user tries to download and install a BlackBerry Java® application, the BlackBerry MDS Connection Service tries to obtain the .cod file by caching and using the HTTP headers from the original request that was used to obtain the .jad file instead of handling the proxy authentication as a new request.