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At 6:29 AM -0700 7/27/00, David M. Cole wrote:
Re: Error 550s ...
From: Men & Mice Support
Date: Thursday, July 27, 2000
Time: 8:59:31 am
>Chuck and gang:
>
>Long story short, I don't have access to my copy of DNS Expert right now.
>Further, when I moved my machines from one ISP to another two weeks ago, I
>didn't have access to it then either, so I haven't run it against my
>domains since I set them up anew.
>
>I have been getting the following types of errors from mailings done by my
>e-mail lists:
>
>>The following message could not be delivered because the address
>>XXXX@newslink.org was rejected by host newslink.org (207.227.119.2).
>>550 REFUSED: Your mail gateway does not have reverse DNS
>
>>The following message could not be delivered because the address
>>XXXXX@sfbeacon.com was rejected by host sfbeacon.com (63.203.202.141).
>>550 5.7.1 Unable to relay for mail@sfbeacon.com
>
>From my feeble attempts to figure this out, the gateway *DOES* have a
>reverse DNS, but maybe I'm wrong.
The bounce messages are being generated with mistakes - the mail
servers doing the rejecting aren't newslink.org and sfbeacon.com,
they're peak.mountin.net and sfb.sfbeacon.com.
The first one could be caused by a transitory failure of their DNS
server, or it could be a genuine missing PTR record. I can't check
without knowing the IP address of your list server. I did check the
IP addresses used in the colegroup.com domain; they all have reverse
records.
The second one is caused by a misconfigured mail server.
____________________________________________________________________
Chris Buxton cbuxton@menandmice.com
Men & Mice http://www.menandmice.com
Makers of: QuickDNS Pro
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