can CNAMEs and MXs coexist

[Joel Miles]

can both CNAME and MX records exist for the same domain?
here is what I'm talking about:

miles.ods.org IN CNAME miles-update.ods.org
miles.ods.org IN MX 10 miles.ods.org
miles.ods.org IN MX 20 <my secondary mail server>

while the miles-update.ods.org file looks like this:

miles-update.ods.org IN A <my dynamically update ip>

will this work?  I haven't had much luck.

PS:
no I can't just put the MX records in miles-update.ods.org, the system I'm
doing this on rewrites the RR every time I update my IP - so that option is
out of the question.

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Joel Miles
(651) 776-6870
jmiles at smm.org
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