I have an account that uses Blackberries. We Have Blackberry Enterprise Server installed on the server. Blackberry users are complaining about spam. The Exchange IMF was not working. We had some issues with that Exchange server a few months ago and it appeared to be working ok. Yesterday I discovered that the IMF was not working at all. Mail is delivered like this. I am not an Exchange Geek but based on what the Blackerries see I am pretty sure this is how it works. Exchange receives the email. Exchange looks at all the settings you have in Global Settings/Message Delivery/Properties. … Continue reading Exchange 2003 IMF filter is not working. Blackberry users revolt.