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Re: [cobalt-developers] Weird DNS / Subdomain Issue

Jeff Stone wrote:

> When I opened up this include file, it had the following wildcard line added
> to it:
> 
> *.myhost.com    IN      A       205.122.50.45

That's called "wildcard DNS", and it has it's own "gotcha", Jeff.

Wildcard DNS under bind only works for subdomains for which there are NO
other records in the zone file.

So if you ever create any other record (an MX record is a good example)
for the subdomain, the wildcard A record will no longer work.

This sometimes creates nonworking DNS that's pretty hard to debug, so
keep it in mind; especially if at some point you have users wanting mail
delivered to their subdomains.

Jeff
-- 
Jeff Lasman <jblists@xxxxxxxxxxxxx>
Linux and Cobalt/Sun/RaQ Consulting
nobaloney.net
P. O. Box 52672, Riverside, CA  92517
voice: (909) 778-9980  *  fax: (702) 548-9484