Date: Mon, 11 Sep 2000 13:09:06 +0200 From: Francesco Casadei <fcasadei@inwind.it> To: brad waite <brad@wcubed.net> Cc: questions@freebsd.org Subject: Re: problems sending to questions Message-ID: <20000911130906.A718@goku.kasby> In-Reply-To: <Pine.BSF.4.21.0009101201030.51705-100000@mail.datausa.com>; from brad@wcubed.net on Sun, Sep 10, 2000 at 12:06:14PM -0600 References: <Pine.BSF.4.21.0009101201030.51705-100000@mail.datausa.com>
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On Sun, Sep 10, 2000 at 12:06:14PM -0600, brad waite wrote:
> I'm not sure why this is happening. hub.freebsd.org can't find my hostname, but nslookup from an
> outside host (the one I'm mailing this from) can. Ideas? Is hub trying to lookup my 192 addr
> (hidden to protect the inocent).
>
>
> -Brad
>
>
> The original message was received at Fri, 8 Sep 2000 14:25:52 -0600 (MDT)
> from gumbie.ssbaptist.net [192.168.1.344]
>
> ----- The following addresses had transient non-fatal errors -----
> <questions@freebsd.org>
>
> ----- Transcript of session follows -----
> ... while talking to hub.freebsd.org.:
> >>> RCPT To:<questions@freebsd.org>
> <<< 450 Client host rejected: cannot find your hostname, [216.17.141.65]
> <questions@freebsd.org>... Deferred: 450 Client host rejected: cannot find your
> hostname, [216.17.141.65]
> Warning: message still undelivered after 4 hours
> Will keep trying until message is 5 days old
>
>
> nslookup from another host:
>
> Server: mail.dataus.com
> Address: 207.174.13.1
>
> Name: hobbes.ssbaptist.net
> Address: 216.17.141.65
>
>
>
>
> To Unsubscribe: send mail to majordomo@FreeBSD.org
> with "unsubscribe freebsd-questions" in the body of the message
>
> end of the original message
FreeBSD.org uses Postfix for mailing lists with some UCE controls
configured. From the Postfix's web site:
[...]
reject_unknown_hostname
Reject the request when the hostname in the client HELO (EHLO)
command has no DNS A or MX record. The
unknown_hostname_reject_code specifies the response code to
rejected requests (default: 450).
[...]
The host command gives to me:
host 216.17.141.65
65.141.17.216.IN-ADDR.ARPA domain name pointer hobbes.ssbaptist.net
But a more detailed query gives:
host -l -t any ssbaptist.net
ssbaptist.net start of authority ssbaptist.net
brad.ssbaptist.net(
2000080801 ;serial (version)
10800 ;refresh period
3600 ;retry refresh this often
604800 ;expiration period
86400 ;minimum TTL
)
ssbaptist.net name server dns.ssbaptist.net
ssbaptist.net has address 216.17.141.72
ssbaptist.net mail is handled (pri=10) by mail.ssbaptist.net
dns.ssbaptist.net has address 216.17.141.65
linux.ssbaptist.net is a nickname for hobbes.ssbaptist.net
pop.ssbaptist.net has address 216.17.141.79
mail.ssbaptist.net has address 216.17.141.70
blocked.ssbaptist.net has address 216.17.141.68
www.ssbaptist.net is a nickname for hobbes.ssbaptist.net
mac.ssbaptist.net has address 216.17.141.77
hobbes.ssbaptist.net has address 216.17.141.70
riegel.ssbaptist.net has address 216.17.141.85
ftp.ssbaptist.net is a nickname for hobbes.ssbaptist.net
ssbaptist.net start of authority ssbaptist.net
brad.ssbaptist.net(
2000080801 ;serial (version)
10800 ;refresh period
3600 ;retry refresh this often
604800 ;expiration period
86400 ;minimum TTL
)
That is, hobbes.ssbaptist.net has address 216.17.141.70 (not .65).
Anyhow, check what is sent to freebsd.org through the HELO command:
this must have an DNS MX or A record.
Francesco Casadei
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