diff --git a/src/engine/server/server.cpp b/src/engine/server/server.cpp
index 45778ffe8..44a2f99b3 100644
--- a/src/engine/server/server.cpp
+++ b/src/engine/server/server.cpp
@@ -1434,11 +1434,6 @@ bool CServer::CheckReservedSlotAuth(int ClientId, const char *pPassword)
 	return false;
 }
 
-void CServer::DropOldClient(int ClientId)
-{
-	m_NetServer.Drop(ClientId, "This version of the client is compromised. Do not click the update button. ddnet.org/olddomain");
-}
-
 void CServer::ProcessClientPacket(CNetChunk *pPacket)
 {
 	int ClientId = pPacket->m_ClientId;
@@ -1500,13 +1495,6 @@ void CServer::ProcessClientPacket(CNetChunk *pPacket)
 				{
 					return;
 				}
-
-				if(DDNetVersion < VERSION_DDNET_NEW_DOMAIN)
-				{
-					DropOldClient(ClientId);
-					return;
-				}
-
 				m_aClients[ClientId].m_ConnectionId = *pConnectionId;
 				m_aClients[ClientId].m_DDNetVersion = DDNetVersion;
 				str_copy(m_aClients[ClientId].m_aDDNetVersionStr, pDDNetVersionStr);
@@ -1524,13 +1512,6 @@ void CServer::ProcessClientPacket(CNetChunk *pPacket)
 				{
 					return;
 				}
-
-				if(!m_aClients[ClientId].m_GotDDNetVersionPacket && !IsSixup(ClientId))
-				{
-					DropOldClient(ClientId);
-					return;
-				}
-
 				if(str_comp(pVersion, GameServer()->NetVersion()) != 0 && str_comp(pVersion, "0.7 802f1be60a05665f") != 0)
 				{
 					// wrong version
diff --git a/src/engine/server/server.h b/src/engine/server/server.h
index 994051079..7a54efe36 100644
--- a/src/engine/server/server.h
+++ b/src/engine/server/server.h
@@ -337,7 +337,6 @@ public:
 	void UpdateClientRconCommands();
 
 	bool CheckReservedSlotAuth(int ClientId, const char *pPassword);
-	void DropOldClient(int ClientId);
 	void ProcessClientPacket(CNetChunk *pPacket);
 
 	class CCache
diff --git a/src/engine/shared/protocol.h b/src/engine/shared/protocol.h
index e5309b0b8..e0f807b10 100644
--- a/src/engine/shared/protocol.h
+++ b/src/engine/shared/protocol.h
@@ -126,8 +126,6 @@ enum
 	VERSION_DDNET_MULTI_LASER = 16040,
 	VERSION_DDNET_ENTITY_NETOBJS = 16200,
 	VERSION_DDNET_REDIRECT = 17020,
-
-	VERSION_DDNET_NEW_DOMAIN = 16040,
 };
 
 typedef std::bitset<MAX_CLIENTS> CClientMask;