More on CNAME problem
Mark.Andrews at nominum.com
Mark.Andrews at nominum.com
Thu Sep 28 23:12:12 UTC 2000
>
> In article <200009280015.e8S0FNu11611 at drugs.dv.isc.org>,
> Mark.Andrews at nominum.com says...
> >
> > It's not that they don't like the answer or don't receive the
> > answer. They receive it and use it. What isn't happening is
> > that the negative answer is not being cached. See RFC 2308.
> > The MX record however is being cached which is why there are
> > far fewer queries for the MX record.
> >
> > Mark
> ****************** REPLY SEPARATER ***************
> OK, here are 2 more examples that happened just yesterday. Both occurred with
>
> "MX" record requests. Our server is responding, but the other server is eithe
> r
> not getting the response or is ignoring it! When will someone admit that this
>
> is not right?
You have been told that this is a perfectly normal query
trace from a site without a nameserver that supports negative
caching attemting to send email to you.
If it bothers you write to them and ask them to install a
nameserver which supports negative caching.
Mark
>
> J.A. Coutts
> Systems Engineer
> Edsonet/TravPro
> ---------------------------------------------------------------
> 10:17:45 Request from 199.117.52.11 for CNAME-record for yellowhead.com.
> 10:17:45 Sending reply to 199.117.52.11 about CNAME-record for
> yellowhead.com.:
> 10:17:45 -> Answer: There are no CNAME-Records for yellowhead.com.
> 10:17:45 -> Authority: SOA-record for yellowhead.com. =
> server1.yellowhead.com. (Serial 2000031302)
> 10:17:45 Request from 199.117.52.11 for CNAME-record for yellowhead.com.
> 10:17:45 Sending reply to 199.117.52.11 about CNAME-record for
> yellowhead.com.:
> 10:17:45 -> Answer: There are no CNAME-Records for yellowhead.com.
> 10:17:45 -> Authority: SOA-record for yellowhead.com. =
> server1.yellowhead.com. (Serial 2000031302)
> 10:17:45 Request from 199.117.52.11 for CNAME-record for yellowhead.com.
> 10:17:45 Sending reply to 199.117.52.11 about CNAME-record for
> yellowhead.com.:
> 10:17:45 -> Answer: There are no CNAME-Records for yellowhead.com.
> 10:17:45 -> Authority: SOA-record for yellowhead.com. =
> server1.yellowhead.com. (Serial 2000031302)
> 10:17:45 Request from 199.117.52.11 for CNAME-record for yellowhead.com.
> 10:17:45 Sending reply to 199.117.52.11 about CNAME-record for
> yellowhead.com.:
> 10:17:45 -> Answer: There are no CNAME-Records for yellowhead.com.
> 10:17:45 -> Authority: SOA-record for yellowhead.com. =
> server1.yellowhead.com. (Serial 2000031302)
> 10:17:45 Request from 199.117.52.11 for CNAME-record for yellowhead.com.
> 10:17:45 Sending reply to 199.117.52.11 about CNAME-record for
> yellowhead.com.:
> 10:17:45 -> Answer: There are no CNAME-Records for yellowhead.com.
> 10:17:45 -> Authority: SOA-record for yellowhead.com. =
> server1.yellowhead.com. (Serial 2000031302)
> 10:17:45 Request from 199.117.52.11 for CNAME-record for yellowhead.com.
> 10:17:45 Sending reply to 199.117.52.11 about CNAME-record for
> yellowhead.com.:
> 10:17:45 -> Answer: There are no CNAME-Records for yellowhead.com.
> 10:17:45 -> Authority: SOA-record for yellowhead.com. =
> server1.yellowhead.com. (Serial 2000031302)
> 10:17:45 Request from 199.117.52.11 for CNAME-record for yellowhead.com.
> 10:17:45 Sending reply to 199.117.52.11 about CNAME-record for
> yellowhead.com.:
> 10:17:45 -> Answer: There are no CNAME-Records for yellowhead.com.
> 10:17:45 -> Authority: SOA-record for yellowhead.com. =
> server1.yellowhead.com. (Serial 2000031302)
> 10:17:45 Request from 199.117.52.11 for CNAME-record for yellowhead.com.
> 10:17:45 Sending reply to 199.117.52.11 about CNAME-record for
> yellowhead.com.:
> 10:17:45 -> Answer: There are no CNAME-Records for yellowhead.com.
> 10:17:45 -> Authority: SOA-record for yellowhead.com. =
> server1.yellowhead.com. (Serial 2000031302)
> 10:17:45 Request from 199.117.52.11 for CNAME-record for yellowhead.com.
> 10:17:45 Sending reply to 199.117.52.11 about CNAME-record for
> yellowhead.com.:
> 10:17:45 -> Answer: There are no CNAME-Records for yellowhead.com.
> 10:17:45 -> Authority: SOA-record for yellowhead.com. =
> server1.yellowhead.com. (Serial 2000031302)
> 10:17:45 Request from 199.117.52.11 for CNAME-record for yellowhead.com.
> 10:17:45 Sending reply to 199.117.52.11 about CNAME-record for
> yellowhead.com.:
> 10:17:45 -> Answer: There are no CNAME-Records for yellowhead.com.
> 10:17:45 -> Authority: SOA-record for yellowhead.com. =
> server1.yellowhead.com. (Serial 2000031302)
> 10:17:45 Request from 199.117.52.11 for CNAME-record for yellowhead.com.
> 10:17:45 Sending reply to 199.117.52.11 about CNAME-record for
> yellowhead.com.:
> 10:17:45 -> Answer: There are no CNAME-Records for yellowhead.com.
> 10:17:45 -> Authority: SOA-record for yellowhead.com. =
> server1.yellowhead.com. (Serial 2000031302)
> 10:17:45 Request from 199.117.52.11 for CNAME-record for yellowhead.com.
> 10:17:45 Sending reply to 199.117.52.11 about CNAME-record for
> yellowhead.com.:
> 10:17:45 -> Answer: There are no CNAME-Records for yellowhead.com.
> 10:17:45 -> Authority: SOA-record for yellowhead.com. =
> server1.yellowhead.com. (Serial 2000031302)
> 10:17:45 Request from 199.117.52.11 for CNAME-record for yellowhead.com.
> 10:17:45 Sending reply to 199.117.52.11 about CNAME-record for
> yellowhead.com.:
> 10:17:45 -> Answer: There are no CNAME-Records for yellowhead.com.
> 10:17:45 -> Authority: SOA-record for yellowhead.com. =
> server1.yellowhead.com. (Serial 2000031302)
> 10:17:45 Request from 199.117.52.11 for CNAME-record for yellowhead.com.
> 10:17:45 Sending reply to 199.117.52.11 about CNAME-record for
> yellowhead.com.:
> 10:17:45 -> Answer: There are no CNAME-Records for yellowhead.com.
> 10:17:45 -> Authority: SOA-record for yellowhead.com. =
> server1.yellowhead.com. (Serial 2000031302)
> 10:17:45 Request from 199.117.52.11 for CNAME-record for yellowhead.com.
> 10:17:45 Sending reply to 199.117.52.11 about CNAME-record for
> yellowhead.com.:
> 10:17:45 -> Answer: There are no CNAME-Records for yellowhead.com.
> 10:17:45 -> Authority: SOA-record for yellowhead.com. =
> server1.yellowhead.com. (Serial 2000031302)
> 10:17:45 Request from 199.117.52.11 for MX-record for yellowhead.com.
> 10:17:45 Sending reply to 199.117.52.11 about MX-record for yellowhead.com.
> :
> 10:17:45 -> Answer: MX-record for yellowhead.com. = mail.yellowhead.com.
> (Preference 100)
> 10:17:45 -> Additional: A-record for mail.yellowhead.com. = 207.34.82.5
> 10:17:45 Request from 199.117.52.11 for MX-record for yellowhead.com.
> 10:17:45 Sending reply to 199.117.52.11 about MX-record for yellowhead.com.
> :
> 10:17:45 -> Answer: MX-record for yellowhead.com. = mail.yellowhead.com.
> (Preference 100)
> 10:17:45 -> Additional: A-record for mail.yellowhead.com. = 207.34.82.5
> 10:17:45 Request from 199.117.52.11 for MX-record for yellowhead.com.
> 10:17:45 Sending reply to 199.117.52.11 about MX-record for yellowhead.com.
> :
> 10:17:45 -> Answer: MX-record for yellowhead.com. = mail.yellowhead.com.
> (Preference 100)
> 10:17:45 -> Additional: A-record for mail.yellowhead.com. = 207.34.82.5
> 10:17:45 Request from 199.117.52.11 for MX-record for yellowhead.com.
> 10:17:45 Sending reply to 199.117.52.11 about MX-record for yellowhead.com.
> :
> 10:17:45 -> Answer: MX-record for yellowhead.com. = mail.yellowhead.com.
> (Preference 100)
> 10:17:45 -> Additional: A-record for mail.yellowhead.com. = 207.34.82.5
> 10:17:45 Request from 199.117.52.11 for MX-record for yellowhead.com.
> 10:17:45 Sending reply to 199.117.52.11 about MX-record for yellowhead.com.
> :
> 10:17:45 -> Answer: MX-record for yellowhead.com. = mail.yellowhead.com.
> (Preference 100)
> 10:17:45 -> Additional: A-record for mail.yellowhead.com. = 207.34.82.5
> 10:17:45 IP address 199.117.52.11 blocked (more than 20 Requests per second
> )
> 10:17:45 Request from 199.117.52.11 on Block list. Ignored!
> ---------------------------------------------------------------
> 14:24:20 Request from 141.202.248.31 for MX-record for yellowhead.com.
> 14:24:20 Request from 141.202.248.31 for MX-record for yellowhead.com.
> 14:24:20 Sending reply to 141.202.248.31 about MX-record for yellowhead.com
> .:
> 14:24:20 -> Answer: MX-record for yellowhead.com. = mail.yellowhead.com.
> (Preference 100)
> 14:24:20 -> Additional: A-record for mail.yellowhead.com. = 207.34.82.5
> 14:24:20 Sending reply to 141.202.248.31 about MX-record for yellowhead.com
> .:
> 14:24:20 -> Answer: MX-record for yellowhead.com. = mail.yellowhead.com.
> (Preference 100)
> 14:24:20 -> Additional: A-record for mail.yellowhead.com. = 207.34.82.5
> 14:24:20 Request from 141.202.248.31 for MX-record for yellowhead.com.
> 14:24:20 Sending reply to 141.202.248.31 about MX-record for yellowhead.com
> .:
> 14:24:20 -> Answer: MX-record for yellowhead.com. = mail.yellowhead.com.
> (Preference 100)
> 14:24:20 -> Additional: A-record for mail.yellowhead.com. = 207.34.82.5
> 14:24:20 Request from 141.202.248.31 for MX-record for yellowhead.com.
> 14:24:20 Sending reply to 141.202.248.31 about MX-record for yellowhead.com
> .:
> 14:24:20 -> Answer: MX-record for yellowhead.com. = mail.yellowhead.com.
> (Preference 100)
> 14:24:20 -> Additional: A-record for mail.yellowhead.com. = 207.34.82.5
> 14:24:20 Request from 141.202.248.31 for MX-record for yellowhead.com.
> 14:24:20 Sending reply to 141.202.248.31 about MX-record for yellowhead.com
> .:
> 14:24:20 -> Answer: MX-record for yellowhead.com. = mail.yellowhead.com.
> (Preference 100)
> 14:24:20 -> Additional: A-record for mail.yellowhead.com. = 207.34.82.5
> 14:24:20 Request from 141.202.248.31 for MX-record for yellowhead.com.
> 14:24:20 Sending reply to 141.202.248.31 about MX-record for yellowhead.com
> .:
> 14:24:20 -> Answer: MX-record for yellowhead.com. = mail.yellowhead.com.
> (Preference 100)
> 14:24:20 -> Additional: A-record for mail.yellowhead.com. = 207.34.82.5
> 14:24:20 Request from 141.202.248.31 for MX-record for yellowhead.com.
> 14:24:20 Sending reply to 141.202.248.31 about MX-record for yellowhead.com
> .:
> 14:24:20 -> Answer: MX-record for yellowhead.com. = mail.yellowhead.com.
> (Preference 100)
> 14:24:20 -> Additional: A-record for mail.yellowhead.com. = 207.34.82.5
> 14:24:20 Request from 141.202.248.31 for MX-record for yellowhead.com.
> 14:24:20 Sending reply to 141.202.248.31 about MX-record for yellowhead.com
> .:
> 14:24:20 -> Answer: MX-record for yellowhead.com. = mail.yellowhead.com.
> (Preference 100)
> 14:24:20 -> Additional: A-record for mail.yellowhead.com. = 207.34.82.5
> 14:24:20 Request from 141.202.248.31 for MX-record for yellowhead.com.
> 14:24:20 Sending reply to 141.202.248.31 about MX-record for yellowhead.com
> .:
> 14:24:20 -> Answer: MX-record for yellowhead.com. = mail.yellowhead.com.
> (Preference 100)
> 14:24:20 -> Additional: A-record for mail.yellowhead.com. = 207.34.82.5
> 14:24:20 Request from 141.202.248.31 for MX-record for yellowhead.com.
> 14:24:20 Sending reply to 141.202.248.31 about MX-record for yellowhead.com
> .:
> 14:24:20 -> Answer: MX-record for yellowhead.com. = mail.yellowhead.com.
> (Preference 100)
> 14:24:20 -> Additional: A-record for mail.yellowhead.com. = 207.34.82.5
> 14:24:20 Request from 141.202.248.31 for MX-record for yellowhead.com.
> 14:24:20 Sending reply to 141.202.248.31 about MX-record for yellowhead.com
> .:
> 14:24:20 -> Answer: MX-record for yellowhead.com. = mail.yellowhead.com.
> (Preference 100)
> 14:24:20 -> Additional: A-record for mail.yellowhead.com. = 207.34.82.5
> 14:24:20 Request from 141.202.248.31 for MX-record for yellowhead.com.
> 14:24:20 Sending reply to 141.202.248.31 about MX-record for yellowhead.com
> .:
> 14:24:20 -> Answer: MX-record for yellowhead.com. = mail.yellowhead.com.
> (Preference 100)
> 14:24:20 -> Additional: A-record for mail.yellowhead.com. = 207.34.82.5
> 14:24:20 Request from 141.202.248.31 for MX-record for yellowhead.com.
> 14:24:20 Sending reply to 141.202.248.31 about MX-record for yellowhead.com
> .:
> 14:24:20 -> Answer: MX-record for yellowhead.com. = mail.yellowhead.com.
> (Preference 100)
> 14:24:20 -> Additional: A-record for mail.yellowhead.com. = 207.34.82.5
> 14:24:20 Request from 141.202.248.31 for MX-record for yellowhead.com.
> 14:24:20 Sending reply to 141.202.248.31 about MX-record for yellowhead.com
> .:
> 14:24:20 -> Answer: MX-record for yellowhead.com. = mail.yellowhead.com.
> (Preference 100)
> 14:24:20 -> Additional: A-record for mail.yellowhead.com. = 207.34.82.5
> 14:24:20 Request from 141.202.248.31 for MX-record for yellowhead.com.
> 14:24:20 Sending reply to 141.202.248.31 about MX-record for yellowhead.com
> .:
> 14:24:20 -> Answer: MX-record for yellowhead.com. = mail.yellowhead.com.
> (Preference 100)
> 14:24:20 -> Additional: A-record for mail.yellowhead.com. = 207.34.82.5
> 14:24:20 Request from 141.202.248.31 for MX-record for yellowhead.com.
> 14:24:20 Sending reply to 141.202.248.31 about MX-record for yellowhead.com
> .:
> 14:24:20 -> Answer: MX-record for yellowhead.com. = mail.yellowhead.com.
> (Preference 100)
> 14:24:20 -> Additional: A-record for mail.yellowhead.com. = 207.34.82.5
> 14:24:20 Request from 141.202.248.31 for MX-record for yellowhead.com.
> 14:24:20 Sending reply to 141.202.248.31 about MX-record for yellowhead.com
> .:
> 14:24:20 -> Answer: MX-record for yellowhead.com. = mail.yellowhead.com.
> (Preference 100)
> 14:24:20 -> Additional: A-record for mail.yellowhead.com. = 207.34.82.5
> 14:24:20 Request from 141.202.248.31 for MX-record for yellowhead.com.
> 14:24:20 Sending reply to 141.202.248.31 about MX-record for yellowhead.com
> .:
> 14:24:20 -> Answer: MX-record for yellowhead.com. = mail.yellowhead.com.
> (Preference 100)
> 14:24:20 -> Additional: A-record for mail.yellowhead.com. = 207.34.82.5
> 14:24:20 Request from 141.202.248.31 for MX-record for yellowhead.com.
> 14:24:20 Sending reply to 141.202.248.31 about MX-record for yellowhead.com
> .:
> 14:24:20 -> Answer: MX-record for yellowhead.com. = mail.yellowhead.com.
> (Preference 100)
> 14:24:20 -> Additional: A-record for mail.yellowhead.com. = 207.34.82.5
> 14:24:20 Request from 141.202.248.31 for MX-record for yellowhead.com.
> 14:24:20 Sending reply to 141.202.248.31 about MX-record for yellowhead.com
> .:
> 14:24:20 -> Answer: MX-record for yellowhead.com. = mail.yellowhead.com.
> (Preference 100)
> 14:24:20 -> Additional: A-record for mail.yellowhead.com. = 207.34.82.5
> 14:24:20 IP address 141.202.248.31 blocked (more than 20 Requests per secon
> d)
> 14:24:20 Request from 141.202.248.31 on Block list. Ignored!
> ---------------------------------------------------------------
>
>
--
Mark Andrews, Nominum Inc.
1 Seymour St., Dundas Valley, NSW 2117, Australia
PHONE: +61 2 9871 4742 INTERNET: Mark.Andrews at nominum.com
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