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Re: [Asrg] DNS basics, was overloading server names doesn't work

2010-02-09 11:11:49
mail.btinternet.com. 600 IN CNAME pop-smtp.bt.mail.yahoo.com.
pop-smtp.bt.mail.yahoo.com. 1800 IN CNAME
pop-smtp.bt.mail.fy5.b.yahoo.com.
pop-smtp.bt.mail.fy5.b.yahoo.com. 300 IN A 217.12.13.134
pop-smtp.bt.mail.fy5.b.yahoo.com. 300 IN A 217.146.188.192

_report.pop-smtp.bt.mail.fy5.b.yahoo.com IN TXT 
abuse-report(_at_)yahoo(_dot_)com

Nope, that won't work. CNAMEs don't do a partial match.

Where did I or anyone else specify a partial match?

The user thinks his POP server is called mail.btinternet.com. When he looks up _report.mail.btinternet.com, what do you expect to happen?

Also 2181. I'll go see if there's a clearer explanation somewhere else.

Normally, something finer-grained that a reference to all of 15 pages would be expected.

Aw, come on. If you can't find the part about CNAMEs in 10 seconds, you're not trying.

Regards,
John Levine, johnl(_at_)taugh(_dot_)com, Taughannock Networks, Trumansburg NY
"I dropped the toothpaste", said Tom, crestfallenly.
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