[olug] disable the default search domain?

[Kevin]

Presuming that you have control over the DNS server. Why do you need a
wildcard DNS at all? If you don't have control over the DNS server,
such as using the ones your ISP gave you, then I'd recommend using
servers that don't have wildcard settings. Cox does this by default
and gives you the option of manually setting DNS settings to another
server that doesn't have wildcards. It's a one-time configuration, so
it shouldn't be much of an inconvenience.

Alternatively, I'd look at the man page for resolv.conf and check out
the setting for "domain"; that and "search x" are mutually exclusive
because one permits multiple while the other does not.

On Thu, Dec 11, 2008 at 13:04, Ryan Stille <ryan at cfwebtools.com> wrote:
> We have a DNS wildcard here.  This is affecting my sendmail box.  When
> it tries to send mail to an invalid domain, such as foox123.com, the DNS
> lookup initially fails, but then it tries foox123.com.mydomain.com and
> it gets back an IP (because of the dns wildcard).   So the message says
> in the queue for days while it tries to deliver that message to a server
> that's not a mail server.
>
> To be clear - I don't have any "search x" lines in my resolv.conf file.
> Its happening because the machine's domain name is a search domain by
> default.   I haven't found a way to disable this, other than to change
> the hostname to be "machinename" instead of "machinename.mydomain.com".
> I'm not sure what else that might screw up.  Any ideas?
>
> -Ryan
>
>
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