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Wildcard DNS entry

2004-09-09 13:55:00
Guy wrote:

But it should wait until the dedicated record type is assigned.  Otherwise
bind would not know the difference between two unrelated txt records.

There is no need to wait for the dedicated record. BIND does not have to
know the difference. If a subdomain has a TXT record, then BIND should
return that record only and not the wildcard record.

This would not work:

watkins-home.com.     txt     "v=spf1 ..."
**.watkins-home.com.  txt     "v=spf1 -all"
www.watkins.home.com. a       1.2.3.4
www.watkins.home.com. txt     "My first web server!"
hot.watkins.home.com. a       1.2.3.5
hot.watkins.home.com. txt     "v=spf1 a -all"
ftp.watkins.home.com. a       1.2.3.6

But this will work:

watkins-home.com.       txt     "v=spf1 ..."
**.watkins-home.com.    txt     "v=spf1 -all"
www.watkins-home.com.   a       1.2.3.4
www.watkins-home.com.   txt     "My first web server!"
www.watkins-home.com.   txt     "v=spf1 -all"
hot.watkins-home.com.   a       1.2.3.5
hot.watkins-home.com.   txt     "v=spf1 a -all"
ftp.watkins-home.com.   a       1.2.3.6

Roger


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