ActiveSync sending internal mail

ActiveSync sending internal mail

Hi,

We have a clustered exchange 2003 SP2 server that we are using active sync
for a load of PDA's there work ok sending and receiving mail to mail domains
outside our exchange but internally they go into the sent items and you see
it appear briefly in outbox but the recipient never gets the e-mail... Any
ideas please people???

Sending external e-mail - Works
Sending internal e-mail from PDA - not work
Sending internal e-mail from PC - works
Sending internal e-mail from OWA - works
Receiving external e-mail - works
Receiving internal e-mail to PDA - works
Receiving internal e-mail to PC - works
Receiving internal e-mail to OWA - works

Look forward to hearing from any of you, as we are really stuck with this
issue as there's not errors in any event log on the PDA or exchange server

Cheers
Brad