protocol bandwith efficiency

we are deploying a new exchange server. Some of our user will be running over a slow WAN connection (500 kbs). I was wondering if anyone knows if I'd be better off ruining pop3/smtp or the native exchange protocol for banwidth efficiency? Which of these protocols uses the least bandwidth?
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sunnyc7Connect With a Mentor Commented:
It's better to run RPC/HTTPS and have outlook directly connected to exchange instead of POP3/SMTP

Sent items are not saved / backed-up on POP3 - and configuring remote backup for users is troublesome to say the least.
ericnilsConnect With a Mentor Commented:
I think the biggest bandwidth savings you will see is to set the Outlook clients to use Cached Exchange Mode.  That way they won't be hitting the server every time they browse to a new message.
danielswansonAuthor Commented:
thanks guys
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