How do I use Linux SMTP to MS Exchange
 

I'm using SLES 9 with postfix and all I want to do
is to pull down the pop3 mails from our ISP's server
to our linux box. Then those mails should just be passed
straight away to our Microsoft exchange server.
So lets say I have a server called Lin.ourplace.net
and a MS box called hell.ourplace.net. Our mail enters
in the form of fred@ourplace.net. given this data is it
possible for someone to suggest how to achieve what I
want? If there are any people out there well versed in mail
techniques or who can direct me to any help specific advice
on this exact problem I would like to say - thank you in advance
for any help you may provide. oh- BTW we have sendmail
exim and postfix at our disposal so whichever you guys think is
easiest suits me. I've never really tackled mail prob's before - so
simple but detailed is what I need. THANKS !!

You can set up sendmail to relay message to the exchange server. Look up something like "sendmail relay exchange" on google. But I don't know how you would be able to use pop3 to get the mail from the ISP so that sendmail can relay it. Maybe have the ISP send the messages directly to the sendmail server?

possible :)
 

Your issue can be solved using Sendmail ( Relay) and Fetchmail. Just try This using Google. :)