BlackBerry :: BIS Server Activation Error?

i am using 9360. while activating hotmail, google, yahoo mail accounts etc. i do not have any problem. but while i am activating my company mail account server rejects me and gives "wrong password" answer to me. i have just discuss with my mail server this topic. they give me this answer: "blackberry using the docode service and we are using courier service thats why they are given problem and not working properly . "but they can not give any idea or any other answer about my problems answer. actually we are using company mail accounts on machines which were activeted before. but at now we can not active any new account or old accounts to new machines. we can not active any company mail account from last week. they gave me server setting and i tried with those too.. but at whole time the same answer "wrong password." we excatly know the pw but server do not give permission to activation.