On Sat, Dec 28, 2002 at 08:53:15AM -0500, Harry Tabak wrote:
> Mail sent from my main server, gatehouse.quadtelecom.com (66.45.116.138) 
> gets rejected.
>   _450_Client_host_rejected:_cannot_find_your_hostname,_[66.45.116.138]
> 
> What are the rules for sending mail!!!!!  I'm not a spammer -- I've 
> never sent spam!!!   Your rejection is very disconcerting.

You are probably being rejected because the IP number of your machine
doesn't have a PTR record for gatehouse.quadtelecom.com:

    happy-idiot-talk:~:% host 66.45.116.138
    138.116.45.66.IN-ADDR.ARPA domain name pointer steelcityhosting.com
    happy-idiot-talk:~:% host gatehouse.quadtelecom.com
    gatehouse.quadtelecom.com has address 66.45.116.138
    gatehouse.quadtelecom.com mail is handled (pri=5) by gatehouse.quadtelecom.com

That makes it look like your machine is being used to send e-mails
with forged headers.  That's mostly a spammer trick, hence the
rejection.

Either arrange for your ISP to incorporate the correct PTR data or
have them delegate your netblock to you or else configure your mail
system forward all your e-mail via some sort of smart host provided by
your ISP.

        Cheers,

        Matthew

-- 
Dr Matthew J Seaman MA, D.Phil.                       26 The Paddocks
                                                      Savill Way
                                                      Marlow
Tel: +44 1628 476614                                  Bucks., SL7 1TH UK

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