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<TITLE>The Answer Guy 36:
Upgrade Kills Name Server
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<H4>"The Linux Gazette...<I>making Linux just a little more fun!</I>"</H4>
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<H4>By James T. Dennis,
<a href="mailto:answerguy@ssc.com">answerguy@ssc.com</a><BR>
Starshine Technical Services,
<A HREF="http://www.starshine.org/">http://www.starshine.org/</A>
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<H3 align="left"><img src="../../gx/dennis/qbubble.gif" height="50" width="60"
alt="(?) " border="0">
Upgrade Kills Name Server
</H3>
<p><strong>From <em>Anonymous</em> on Fri, 25 Dec 1998
</strong></p>
<!-- ::
<A HREF="http://www.redhat.com/">Red Hat</A> Upgrade Kills Name Server
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
:: -->
<BLOCKQUOTE>
</BLOCKQUOTE>
<P><STRONG><IMG SRC="../../gx/dennis/qbub.gif" ALT="(?)"
HEIGHT="28" WIDTH="50" BORDER="0"
>
I just upgraded"= to Red Hat 5.2 and set up everything as I had it
before and now I get the following:
</STRONG></P>
<Pre><STRONG>
fetchmail: POP3 connection to mail.nashville.com failed: temporary name server error
</STRONG></Pre>
<P><STRONG>
Netscape can't recognize mail.nashville.com either.
I am having to send this from Windows email.
</STRONG></P>
<P><STRONG>
My <tt>etc/hosts</tt> file looks the same as it did before. What other
files do I need to check and/or post?
</STRONG></P>
<P><STRONG>
Thanks!!
</STRONG></P>
<BLOCKQUOTE><IMG SRC="../../gx/dennis/bbub.gif" alt="(!)"
HEIGHT="28" WIDTH="50" BORDER="0"
>
I'm just going to guess that the upgrade renamed some of
your files (probably your DNS zone files, possible even your
<TT>/etc/resolve.conf)</TT> to add the '<tt>rpmorig</tt>' extension.
</BLOCKQUOTE>
<BLOCKQUOTE>
So, search for <tt>rpmorig</tt> files and look for the files that
were put in place of them. You'll have to manually resolve
the differences. (Use the '<tt>diff</tt>' program).
</BLOCKQUOTE>
<BLOCKQUOTE>
I've complained to them before about their penchant for
moving your files out of the way when they to a upgrades.
Their concern is that the old configuration files may be
incompatible with the new ones. I've said that the
disruption caused by users doing an upgrade when they never
realized or tracked which files there changed and
"configured" tends to outweigh the chances that a new
package upgrade will completely fail when presented with an
older format of its own configuration file.
</BLOCKQUOTE>
<BLOCKQUOTE>
One problem to consider is that you old version of
Linux may have been running BIND 4.9.x or earlier (I'm
guessing that your system is providing it's own DNS
services). The new version (5.2) might be installing
BIND 8.1.2. These <EM>do</EM> have incompatible file formats
for the base configuration file --- however the name has
chagned too. The old one used <tt>named.boot</tt>. The new version
uses <TT>/etc/named.conf.</TT> There is a utility with the package
to convert a <tt>named.boot</tt> file to <tt>named.conf</tt> format.
Actually the new format is much easier to set up.
</BLOCKQUOTE>
<BLOCKQUOTE>
Anyway it is almost certain that you need to configure your
'<tt>named</tt>' (BIND).
</BLOCKQUOTE>
<BLOCKQUOTE>
Unix mail doesn't normally refer to your <TT>/etc/hosts</TT> file
since that can't convey information about MX records and
preferences. SMTP mail routing is done via MX records
--- not by host address (A) records. So it doesn't matter
what your <TT>/etc/hosts</TT> file look like for this.
</BLOCKQUOTE>
<!-- sig -->
<!-- end 76 -->
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<P> <hr> <P>
<H5 align="center"><a href="http://www.linuxgazette.com/ssc.copying.html"
>Copyright ©</a> 1999, James T. Dennis
<BR>Published in <I>The Linux Gazette</I> Issue 36 January 1999</H5>
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