I completely agree with Serge with respect to list vs collection.  His
comments are, in fact, not open to disagreement.  They are technical facts.

However, I wonder if it might not be better to use a SortedSet to hold the
MX records.  Are we certain that returning a correctly ordered list is
actually in the DNS server's contract?  (Rather than just happening to be
the behaviour of the ones we test against?)  If we use SortedSet, with a
custom Comparator, we can guarantee the correct ordering ourselves.

If the DNS rfc states that the ordering MUST be correct (not SHOULD or MAY)
then a java.util.List is fine.  Otherwise I believe that a
java.util.SortedSet is required.

Cheers

ADK

--------------------------------------------

There is no magic.


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