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View Thread: Installing Exchange 2003 on Server 2003 with SP1
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    Ok I've never tried sending mail via telnet before but following that article and trying

    MAIL gives me the following error
    454 5.7.3 Client does not have permission to submit mail to this server.

    I don't know why this is as I it all appears to be setup to accept all mail! Perplexed

    Update: I tried this from a machine on the local network, from my XP box and from the server directly using telnet in cmd prompt. All gave the same result. Any ideas?