A -vs- CNAME
William Webb
wwebb at advdata.net
Thu Oct 14 12:20:55 UTC 1999
I had an ISP request that a batch of CNAME's that pointed to one
address all be changed to A records pointing to the same IP
address. He said this would allow his server software to operate
"more efficiently." I realize that the reverse, changing from a
CNAME to an A record can actually cause problems with some
operations like sendmail, but I have not heard that an A record
could result in more "efficient" server operation than a CNAME.
Does anyone have an explanation for how that could be possible?
Are we talking about 1/25th of a second less DNS lookup time?
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