DNS broken after Fedora 10 upgrade

Gordon Messmer yinyang at eburg.com
Fri Dec 5 07:11:25 UTC 2008


woodson2 wrote:
> This is what I see in /var/log/messages
> 03-Dec-2008 10:07:46.262 /etc/named.conf:28: using specific query-source port suppresses port randomization and can be insecure.
> 03-Dec-2008 10:07:46.263 could not get query source dispatcher (0.0.0.0#53)

You should probably take the default options used in 
/etc/named.caching-nameserver.conf and replace whatever you have in 
named.conf.

> This is the results of  named-checkconf -z
> 
> zone maizenblue.com/IN: maizenblue.com/MX 'mail.maizenblue.com' is a CNAME (illegal)

Your MX record must be a hostname that resolves to an IP.  That is, you 
have something like:

maizenblue.com.	MX	5	mail.maizenblue.com.
mail.maizenblue.com.		CNAME something

Instead, you must use:

maizenblue.com.	MX	5	mail.maizenblue.com.
mail.maizenblue.com.		A 1.2.3.4

Some mail servers will not deliver mail to you or accept your mail, as 
your DNS records violate the relevant RFCs.

> zone maizenblue.com/IN: loaded serial 2007041818
> zone 10.10.10.in-addr.arpa/IN: loading from master file 10.10.10.zone failed: file not found
> _default/10.10.10.in-addr.arpa/IN: file not found
> looks like it can't find the reverse zone file, however it is definitely there....Any help would be greatly appreciated...Thanks

I'm not sure about that one.  Maybe an SELinux issue?  Check 
/var/log/audit/audit.log




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