connecting To exchange mail from home


I have recently removed "Allow all computers which successfully authenticate to relay, regardless of the list above" because I had a spam attack; However, now my remote users are not allowed to send e-mail out they were setup on POP and IMAP. I do have an exchange server 2003, and Active Synch is setup, Iphones users can connect fine via Exchange. How can I get my Outlook 2003/2007 users to connect to our Exchange 2003 server now that we have setup these new settings to prevent relay?

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The idea is to enable rpc over https for outlook and not pop/imap
vrosas_03Author Commented:
Thank you, I'll try that.
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