Hmmm, A/S is where you set your exchange settings an timings as well, unless you know of another way that I don't?
I used to use Mail2web for a couple years, pretty nice exchange service, though I have enough services to pay for already, so I switched to Gmail as my exchange(Free) instead of Seven, Dash an a couple others that are free as well.
Guess, I drank the kool aid somewhat as I trust Google with my Email delivery an storage more so then the others, it agregates alot of accounts for me very well, normally til today that is lol.
<-- Email junkie, I have a few other Pop accounts polling an Hotmail Auto syncing as well, just Google is my exchange account.
Today however, its borked for me, I reset it as my exchange, it worked once then won't recoqnize new email again, so bah on all of them.

WR