We run a Blackberry Enterprise Server with 10 Blackberry's, two of our blackberry's are acting very strangley and won't send email.
When we send a message we get a reply "Message Status: Desktop Email program unable to submit message"
I have checked out the Rim Knowledge base and it says it could relate to cacheing of credentials between exchange and BES, and to down the BES to allow force a cache refresh. I have tried this with no success.
Does anyone have any suggestions, it only happens with 2 of our blackberry's the rest work like a dream.