I have my exchange 2003 sp2 server and clients with outlook 2007/2010 are receiving mails after two minutes or later. The same comes to blackberry very soon but after a while it comes to outlook whereas outlook 2003 clients are receiving mails instantly.
I changed the options in 2007/2010 the interval to send/receive mails. It is set to 1 minute.
How to resolve this issue