At 0:38 +0200 2003/02/07, Vadim Vygonets wrote:
>Quoth Greg A. Woods on Thu, Feb 06, 2003:
>> [ On Thursday, February 6, 2003 at 01:32:31 (+0200), Vadim Vygonets wrote: ]
>> > foo.friends.dom. IN CNAME bar.my.dom.
> > > bar.my.dom. IN MX 10 bar.my.dom.
>>
>> Why create such an obfuscation?
>
>I need foo.friends.dom to point to that machine for other
>reasons. (Now I made it an A record instead.)
>
>> It also makes it a _lot_ easier to figure out what's going on if the
>> mailer at bar.my.dom suddenly complains that an MX points to itself!
>
>The MX record for both should point to bar.my.dom (well,
>technically, as long as bar.my.dom is the only mail exchanger for
>itself, the MX record may be omitted, but I like to have it).
>
well, it would probably be more correct to say that (the host)
bar.my.dom. is the only mail exchanger for the domain of the same
name.. this is why MX records should never be omitted, the left and
right hand side are never the same thing.
This is in RFC 7821.
g
