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  1. or download this
    use strict;
use warnings;
...


__DATA__
  2. or download this
    ...
mail1-out.nyc.domain.com
...
        (61)     warning: malformed domain name in resource data of MX
+ record for *****
        (1)     warning: no MX host for epm.net has a valid address re
+cord
        (61)     warning: valid_hostname: empty hostname