Orbz mistake ?

Hello


I have tried to send email to procmail-users(_at_)procmail(_dot_)org; I 
received the
following answer:

        ----- The following addresses had permanent fatal errors -----
        <procmail-users(_at_)procmail(_dot_)org>
        (reason: 553 5.3.0 
<procmail(_at_)informatik(_dot_)rwth-aachen(_dot_)de>... Open spam
        relay  - see http://www.orbz.org/)

So I checked www.orbz.org and tried the IP address of my mail server
(62.4.22.172); it is in fact *not blackholed* according to orbz.org:

        ORBZ Database Information
        IP: 62.4.22.172
        IP not found in database
        =========================================================
        See any known spam from this host (off-site link)
        (SpamCop reports have no bearing whatsoever on ORBZ listings)
        =========================================================
        Direct DNS Lookups
        ORBZ DNS lookups lag behind database information.
        inputs.orbz.org: clean
        outputs.orbz.org: clean
        relays.ordb.org: clean
        orbs.dorkslayers.com: clean
        dev.null.dk: clean
        relays.osirusoft.com: clean
        bl.spamcop.net: clean
        relays.visi.com: clean

This IP is also unknown to SpamCop.

I am sending this mail from another address...



Why was this mail rejected under these conditions ?

Thanks for any help.


Seb.

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