sub breakEmailAddress
{
   my ($address) = shift(@_); 
   my @components = split('@', $address); 
   my @counter    = split('@', $address);
   return (\@components, \@counter);
}

my ($first, $second) = breakEmailAddress('john@some.domain.com');
print "FirstArr: @$first\n";
print "SecondArr: @$second\n";