TEST/REWRITE provides a straightforward test facility for
    examining PMDF's address rewriting and channel mapping process
    without actually sending any message. Various qualifiers can be
    used to control whether TEST/REWRITE uses the configuration text
    files or the compiled configuration (if present), the amount of
    output produced, and so on.

    If one or more test addresses are specified on the command
    line, TEST/REWRITE applies PMDF address rewriting to those
    addresses, reports the results, and exits. If no test address
    is specified TEST/REWRITE will enter a loop, prompting for
    addresses, rewriting them, and prompting again for more
    addresses. TEST/REWRITE will exit when a CTRL/Z is entered.

    When testing rewriting of a alias corresponding to a mailing list
    which has an AUTH_ or CANT_ type of named parameter controlling
    who is authorized to post to the list, or when testing rewriting
    when SEND_ACCESS or related mapping tables are in effect, note
    that by default TEST/REWRITE uses as the posting address the
    return address of the local postmaster as specified by the
    RETURN_ADDRESS option in the PMDF option file. To specify a
    different posting address for the rewriting process, use the
    /FROM qualifier.