the MX lookups and, only if they return nothing, make the A lookups.
git-svn-id: https://svn.perl.org/qpsmtpd/trunk@880 958fd67b-6ff1-0310-b445-bb7760255be9
Fix to prevent run_continuation being incorrectly called
(both Radu Greab)
git-svn-id: https://svn.perl.org/qpsmtpd/trunk@857 958fd67b-6ff1-0310-b445-bb7760255be9