diff --git a/apps/dokploy/server/api/routers/mariadb.ts b/apps/dokploy/server/api/routers/mariadb.ts
index 7d4bd2e50..b52b737a5 100644
--- a/apps/dokploy/server/api/routers/mariadb.ts
+++ b/apps/dokploy/server/api/routers/mariadb.ts
@@ -1,5 +1,6 @@
 import {
 	addNewService,
+	checkPortInUse,
 	checkServiceAccess,
 	createMariadb,
 	createMount,
@@ -172,6 +173,20 @@ export const mariadbRouter = createTRPCRouter({
 					message: "You are not authorized to save this external port",
 				});
 			}
+
+			if (input.externalPort) {
+				const portCheck = await checkPortInUse(
+					input.externalPort,
+					mongo.serverId || undefined,
+				);
+				if (portCheck.isInUse) {
+					throw new TRPCError({
+						code: "CONFLICT",
+						message: `Port ${input.externalPort} is already in use by ${portCheck.conflictingContainer}`,
+					});
+				}
+			}
+
 			await updateMariadbById(input.mariadbId, {
 				externalPort: input.externalPort,
 			});
diff --git a/apps/dokploy/server/api/routers/mongo.ts b/apps/dokploy/server/api/routers/mongo.ts
index ae0fa4741..661c808db 100644
--- a/apps/dokploy/server/api/routers/mongo.ts
+++ b/apps/dokploy/server/api/routers/mongo.ts
@@ -1,5 +1,6 @@
 import {
 	addNewService,
+	checkPortInUse,
 	checkServiceAccess,
 	createMongo,
 	createMount,
@@ -189,6 +190,20 @@ export const mongoRouter = createTRPCRouter({
 					message: "You are not authorized to save this external port",
 				});
 			}
+
+			if (input.externalPort) {
+				const portCheck = await checkPortInUse(
+					input.externalPort,
+					mongo.serverId || undefined,
+				);
+				if (portCheck.isInUse) {
+					throw new TRPCError({
+						code: "CONFLICT",
+						message: `Port ${input.externalPort} is already in use by ${portCheck.conflictingContainer}`,
+					});
+				}
+			}
+
 			await updateMongoById(input.mongoId, {
 				externalPort: input.externalPort,
 			});
diff --git a/apps/dokploy/server/api/routers/mysql.ts b/apps/dokploy/server/api/routers/mysql.ts
index 5204fedc8..ffbf9c593 100644
--- a/apps/dokploy/server/api/routers/mysql.ts
+++ b/apps/dokploy/server/api/routers/mysql.ts
@@ -1,5 +1,6 @@
 import {
 	addNewService,
+	checkPortInUse,
 	checkServiceAccess,
 	createMount,
 	createMysql,
@@ -187,6 +188,20 @@ export const mysqlRouter = createTRPCRouter({
 					message: "You are not authorized to save this external port",
 				});
 			}
+
+			if (input.externalPort) {
+				const portCheck = await checkPortInUse(
+					input.externalPort,
+					mongo.serverId || undefined,
+				);
+				if (portCheck.isInUse) {
+					throw new TRPCError({
+						code: "CONFLICT",
+						message: `Port ${input.externalPort} is already in use by ${portCheck.conflictingContainer}`,
+					});
+				}
+			}
+
 			await updateMySqlById(input.mysqlId, {
 				externalPort: input.externalPort,
 			});
diff --git a/apps/dokploy/server/api/routers/postgres.ts b/apps/dokploy/server/api/routers/postgres.ts
index e1718bff1..97db0b878 100644
--- a/apps/dokploy/server/api/routers/postgres.ts
+++ b/apps/dokploy/server/api/routers/postgres.ts
@@ -1,5 +1,6 @@
 import {
 	addNewService,
+	checkPortInUse,
 	checkServiceAccess,
 	createMount,
 	createPostgres,
@@ -192,6 +193,20 @@ export const postgresRouter = createTRPCRouter({
 					message: "You are not authorized to save this external port",
 				});
 			}
+
+			if (input.externalPort) {
+				const portCheck = await checkPortInUse(
+					input.externalPort,
+					postgres.serverId || undefined,
+				);
+				if (portCheck.isInUse) {
+					throw new TRPCError({
+						code: "CONFLICT",
+						message: `Port ${input.externalPort} is already in use by ${portCheck.conflictingContainer}`,
+					});
+				}
+			}
+
 			await updatePostgresById(input.postgresId, {
 				externalPort: input.externalPort,
 			});
diff --git a/apps/dokploy/server/api/routers/redis.ts b/apps/dokploy/server/api/routers/redis.ts
index d377b1707..0f09ae0dd 100644
--- a/apps/dokploy/server/api/routers/redis.ts
+++ b/apps/dokploy/server/api/routers/redis.ts
@@ -1,5 +1,6 @@
 import {
 	addNewService,
+	checkPortInUse,
 	checkServiceAccess,
 	createMount,
 	createRedis,
@@ -211,6 +212,20 @@ export const redisRouter = createTRPCRouter({
 					message: "You are not authorized to save this external port",
 				});
 			}
+
+			if (input.externalPort) {
+				const portCheck = await checkPortInUse(
+					input.externalPort,
+					mongo.serverId || undefined,
+				);
+				if (portCheck.isInUse) {
+					throw new TRPCError({
+						code: "CONFLICT",
+						message: `Port ${input.externalPort} is already in use by ${portCheck.conflictingContainer}`,
+					});
+				}
+			}
+
 			await updateRedisById(input.redisId, {
 				externalPort: input.externalPort,
 			});