We currently have an issue with exchange in both our internal/ external Mac users cannot connect to exchange and only external MS outlook users cannot connect.
All smart phone devices (i.e. iPhone, Android etc..) which are outside our domain network i.e. using a Mobile data connection can still connect and send and receive mail and all internal outlook users can connect + send/receive mail fine as well.
I have checked all obvious things such as the MS Exchange services and ensured they are all running, rebooted the Exchange server and also checked bindings within IIS and from what I can tell they appear to be OK.
I am now stuck on this and I can't see how it would be a network issue as mentioned above the smart phones (which are outside the network) are connecting and puling down the mail just fine. I am thinking its perhaps related to an active syc issue, but im am by far no exchange expert and urgently need the help and advise of a EE exchange guru to assit with this.
Thanks in advance,