class firewall::implementations::shorewall::router::mail($destination, $zone = 'loc', $originaldest = $ipaddress) {
  shorewall::rule { 'mail-1':
    action          => 'DNAT',
    source          => 'net',
    destination     => "$zone:$destination:25",
    proto           => 'tcp',
    destinationport => '25',
    ratelimit       => '-',
    order           => 1000,
  }

  shorewall::rule { 'mail-2':
    action          => 'DNAT',
    source          => '$FW',
    destination     => "$zone:$destination:25",
    proto           => 'tcp',
    destinationport => '25',
    originaldest    => "$originaldest",
    ratelimit       => '-',
    order           => 1001,
  }

  shorewall::rule { 'mail-3':
    action          => 'DNAT',
    source          => 'net',
    destination     => "$zone:$destination:993",
    proto           => 'tcp',
    destinationport => '993',
    ratelimit       => '-',
    order           => 1002,
  }

  shorewall::rule { 'mail-4':
    action          => 'DNAT',
    source          => '$FW',
    destination     => "$zone:$destination:993",
    proto           => 'tcp',
    destinationport => '993',
    originaldest    => "$originaldest",
    ratelimit       => '-',
    order           => 1003,
  }

  shorewall::rule { 'mail-5':
    action          => 'DNAT',
    source          => 'net',
    destination     => "$zone:$destination:587",
    proto           => 'tcp',
    destinationport => '587',
    ratelimit       => '-',
    order           => 1004,
  }

  shorewall::rule { 'mail-6':
    action          => 'DNAT',
    source          => '$FW',
    destination     => "$zone:$destination:587",
    proto           => 'tcp',
    destinationport => '587',
    originaldest    => "$originaldest",
    ratelimit       => '-',
    order           => 1005,
  }
}