diff --git a/app/Classes/FTN/Packet.php b/app/Classes/FTN/Packet.php
index 544c78a..30235c0 100644
--- a/app/Classes/FTN/Packet.php
+++ b/app/Classes/FTN/Packet.php
@@ -3,6 +3,7 @@
 namespace App\Classes\FTN;
 
 use Carbon\Carbon;
+use Illuminate\Database\Eloquent\ModelNotFoundException;
 use Illuminate\Support\Arr;
 use Illuminate\Support\Collection;
 use Illuminate\Support\Facades\Log;
@@ -11,7 +12,7 @@ use Symfony\Component\HttpFoundation\File\File;
 
 use App\Classes\FTN as FTNBase;
 use App\Exceptions\InvalidPacketException;
-use App\Models\{Address,Domain,Echomail,Netmail,Software,System,Zone};
+use App\Models\{Address,Echomail,Netmail,Software,System,Zone};
 use App\Notifications\Netmails\{EchomailBadAddress,NetmailBadAddress};
 
 /**
@@ -87,11 +88,11 @@ abstract class Packet extends FTNBase implements \Iterator, \Countable
 	 * @param mixed $f File handler returning packet data
 	 * @param string $name
 	 * @param int $size
-	 * @param Domain|null $domain
+	 * @param System|null $so - The system that sent us the packet, used to figure out domains if the packet is for a different zone
 	 * @return Packet
 	 * @throws InvalidPacketException
 	 */
-	public static function process(mixed $f,string $name,int $size,Domain $domain=NULL): self
+	public static function process(mixed $f,string $name,int $size,System $so=NULL): self
 	{
 		Log::debug(sprintf('%s:+ Opening Packet [%s] with size [%d]',self::LOGKEY,$name,$size));
 
@@ -140,22 +141,29 @@ abstract class Packet extends FTNBase implements \Iterator, \Countable
 
 		Log::info(sprintf('%s:- Packet [%s] is a [%s] packet',self::LOGKEY,$o->name,get_class($o)));
 
-		// Work out the packet zone
-		if ($o->fz && ($o->fd || $domain)) {
-			$o->zone = Zone::select('zones.*')
-				->join('domains',['domains.id'=>'zones.domain_id'])
-				->where('zone_id',$o->fz)
-				->where('name',$o->fd ?: $domain->name)
-				->single();
+		if ($o->fz && ($o->fd || $so)) {
+			Log::alert(sprintf('%s:! No domain in the packet, work it out from the system [%d] for zone [%d]',self::LOGKEY,$so->name,$o->fz));
+
+			if (($x=$so->zones->where('zone_id',$o->fz)->unique('domain_id'))->count() === 1) {
+				$o->zone = $x->pop();
+
+			} else {
+				Log::alert(sprintf('%s:! Node [%s] has two zones with [%d]',self::LOGKEY,$so->name,$o->fz));
+			}
 		}
 
 		// If zone is not set, then we need to use a default zone - the messages may not be from this zone.
 		if (empty($o->zone)) {
 			Log::alert(sprintf('%s:! We couldnt work out the packet zone, so we have fallen back to the default for [%d]',self::LOGKEY,$o->fz));
 
-			$o->zone = Zone::where('zone_id',$o->fz)
-				->where('default',TRUE)
-				->singleOrFail();
+			try {
+				$o->zone = Zone::where('zone_id',$o->fz)
+					->where('default',TRUE)
+					->singleOrFail();
+
+			} catch (ModelNotFoundException $e) {
+				throw new InvalidPacketException(sprintf('%s:! We couldnt work out the packet zone, and there isnt a default for[%d]',self::LOGKEY,$o->fz));
+			}
 		}
 
 		Log::info(sprintf('%s:- Packet Dated [%s] from [%s] to [%s]',self::LOGKEY,$o->date,$o->fftn_t,$o->tftn_t));
@@ -186,7 +194,7 @@ abstract class Packet extends FTNBase implements \Iterator, \Countable
 			}
 
 			// If we get here
-			throw new InvalidPacketException(sprintf('Cannot determine END of message/packet: %s|%s',get_class($o),hex_dump($message)));;
+			throw new InvalidPacketException(sprintf('Cannot determine END of message/packet: %s|%s',get_class($o),hex_dump($message)));
 		}
 
 		if ($msgbuf)
diff --git a/app/Classes/File/Receive.php b/app/Classes/File/Receive.php
index ad35b17..05cdc59 100644
--- a/app/Classes/File/Receive.php
+++ b/app/Classes/File/Receive.php
@@ -128,9 +128,9 @@ class Receive extends Base
 							// If packet is greater than a size, lets queue it
 							if ($this->queue || ($this->receiving->size > config('fido.queue_size',0))) {
 								Log::info(sprintf('%s:- Packet [%s] will be sent to the queue for processing because its [%d] size, or queue forced',self::LOGKEY,$this->receiving->full_name,$this->receiving->size));
-								PacketProcess::dispatch($this->receiving->rel_name,$this->ao->zone->domain,FALSE,$rcvd_time);
+								PacketProcess::dispatch($this->receiving->rel_name,$this->ao->system,FALSE,$rcvd_time);
 							} else
-								PacketProcess::dispatchSync($this->receiving->rel_name,$this->ao->zone->domain,TRUE,$rcvd_time);
+								PacketProcess::dispatchSync($this->receiving->rel_name,$this->ao->system,TRUE,$rcvd_time);
 
 						} catch (\Exception $e) {
 							Log::error(sprintf('%s:! Got error dispatching packet [%s] (%d:%s-%s).',self::LOGKEY,$this->receiving->rel_name,$e->getLine(),$e->getFile(),$e->getMessage()));
diff --git a/app/Console/Commands/PacketInfo.php b/app/Console/Commands/PacketInfo.php
index cb7f078..5a413bb 100644
--- a/app/Console/Commands/PacketInfo.php
+++ b/app/Console/Commands/PacketInfo.php
@@ -50,7 +50,7 @@ class PacketInfo extends Command
 		}
 
 		foreach ($f as $packet) {
-			$pkt = Packet::process($packet,$x=$f->itemName(),$f->itemSize(),$a?->zone->domain);
+			$pkt = Packet::process($packet,$x=$f->itemName(),$f->itemSize(),$a?->system);
 
 			$this->alert(sprintf('File Name: %s',$x));
 
diff --git a/app/Jobs/PacketProcess.php b/app/Jobs/PacketProcess.php
index fcdae4a..ab64e3e 100644
--- a/app/Jobs/PacketProcess.php
+++ b/app/Jobs/PacketProcess.php
@@ -17,7 +17,7 @@ use League\Flysystem\UnableToMoveFile;
 use App\Classes\File;
 use App\Classes\FTN\Packet;
 use App\Exceptions\InvalidPacketException;
-use App\Models\{Domain,Echomail,Netmail};
+use App\Models\{Echomail,Netmail,System};
 use App\Notifications\Netmails\PacketPasswordInvalid;
 
 class PacketProcess implements ShouldQueue
@@ -27,15 +27,15 @@ class PacketProcess implements ShouldQueue
 	use Dispatchable, InteractsWithQueue, Queueable, SerializesModels;
 
 	private string $filename;
-	private Domain $do;
+	private System $so;
 	private Carbon $rcvd_time;
 	private bool $interactive;
 	private bool $nobot;
 
-	public function __construct(string $filename,Domain $do,bool $interactive=TRUE,Carbon $rcvd_time=NULL,bool $nobot=FALSE)
+	public function __construct(string $filename,System $so,bool $interactive=TRUE,Carbon $rcvd_time=NULL,bool $nobot=FALSE)
 	{
 		$this->filename = $filename;
-		$this->do = $do;
+		$this->so = $so;
 		$this->interactive = $interactive;
 		$this->rcvd_time = $rcvd_time ?: Carbon::now();
 		$this->nobot = $nobot;
@@ -71,7 +71,7 @@ class PacketProcess implements ShouldQueue
 
 			foreach ($f as $packet) {
 				try {
-					$pkt = Packet::process($packet,Arr::get(stream_get_meta_data($packet),'uri'),$f->itemSize(),$this->do);
+					$pkt = Packet::process($packet,Arr::get(stream_get_meta_data($packet),'uri'),$f->itemSize(),$this->so);
 
 					// Check that the packet is from a system that is defined in the DB
 					if (! $pkt->fftn) {
@@ -81,7 +81,7 @@ class PacketProcess implements ShouldQueue
 					}
 
 					if (! our_nodes($pkt->fftn->zone->domain)->contains($pkt->fftn)) {
-						Log::error(sprintf('%s:! Packet [%s] is from a system that is not configured with us? [%s] for [%s]',self::LOGKEY,$this->filename,$pkt->fftn_t,$this->do->name));
+						Log::error(sprintf('%s:! Packet [%s] is from a system that is not configured with us? [%s]',self::LOGKEY,$this->filename,$pkt->fftn_t));
 
 						// @todo Notification::route('netmail',$pkt->fftn)->notify(new UnexpectedPacketFromYou($this->filename));
 						// @todo Parse the packet for netmails and process them. We'll only accept netmails to us, and ignore all others