MESSAGE
| DATE | 2015-01-23 |
| FROM | mrbrklyn@panix.com
|
| SUBJECT | Subject: [NYLXS - HANGOUT] [rick@linuxmafia.com: [conspire] Testing DNS availability]
|
----- Forwarded message from Rick Moen -----
Date: Thu, 22 Jan 2015 15:19:09 -0800
From: Rick Moen
To: conspire-at-linuxmafia.com
Subject: [conspire] Testing DNS availability
User-Agent: Mutt/1.5.20 (2009-06-14)
Might as well share this with others. (My DNS nameserver is, if memory
serves, a DNS secondary for Ruben's domain.)
Quoting Ruben Safir (mrbrklyn-at-panix.com):
> FIWI, that means the secondary DNS for mrbrklyn.com et al is all
> working?
Here's how you can get the answer to that question with trivial effort,
without needing to ask me or anyone else:
:r! whois mrbrklyn.com | grep "^Name Server"
Name Server: WWW2.MRBRKLYN.COM
Name Server: NS1.LINUXMAFIA.COM
:r! dig -t soa mrbrklyn.com -at-ns1.linuxmafia.com +short
www2.mrbrklyn.com. ruben.www2.mrbrklyn.com. 2013062602 43200 3600 2419200 86400
:r! dig -t soa mrbrklyn.com -at-www2.mrbrklyn.com +short
www2.mrbrklyn.com. ruben.www2.mrbrklyn.com. 2013062602 43200 3600 2419200 86400
So, yes. And now you know how to test DNS availability yourself. Yr.
welcome!
(The point of asking _specifically_ for the SOA record is that it
permits you in a single query per nameserver to determine not only
whether the nameserver is answering but also whether it has the same
zonefile revision as the other authoritative nameservers do.)
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----- End forwarded message -----
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