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From: Meng Weng Wong (mengwongdumbo.pobox.com)
Date: Wed Oct 31 2001 - 23:01:54 CST

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    On Wed, Oct 31, 2001 at 08:32:19PM +0000, Hamish Marson wrote:
    |
    | FWIW The Cricket book recommends using only canonical names in MX
    | records, never aliases... But either will (usually) work.
    |

    This is an assertion which I have never seen properly justified.

    While I personally don't do MX->CNAME simply because it
    seems to be so extremely unfashionable as to invite negative
    karma, as an academic exercise I would like to invite
    discussion on whether, with modern DNS, it really should
    continue to be an Internet bugbear.

    In brief, MX->CNAME is frowned upon because it can cause
    problems under a certain set of circumstances; but when
    those circumstances are easily avoided, does there remain a
    reason to deprecate it?

    http://www.mengwong.com/misc/rfc1912-is-wrong.html

    If an unassailable rebuttal is found I will be happy to
    recant my argument and lay the question to rest for good.
    -
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