diff --git a/ui/src/components/access/forms/AccessConfigFieldsProviderEmail.tsx b/ui/src/components/access/forms/AccessConfigFieldsProviderEmail.tsx
index 2a800759..a5febcc9 100644
--- a/ui/src/components/access/forms/AccessConfigFieldsProviderEmail.tsx
+++ b/ui/src/components/access/forms/AccessConfigFieldsProviderEmail.tsx
@@ -4,7 +4,7 @@ import { createSchemaFieldRule } from "antd-zod";
 import { z } from "zod";
 
 import Show from "@/components/Show";
-import { isDomain, isEmail, isIPv4, isIPv6, isPortNumber } from "@/utils/validator";
+import { isEmail, isHostname, isPortNumber } from "@/utils/validator";
 
 import { useFormNestedFieldsContext } from "./_context";
 
@@ -127,7 +127,7 @@ const getSchema = ({ i18n = getI18n() }: { i18n: ReturnType<typeof getI18n> }) =
   const { t } = i18n;
 
   return z.object({
-    smtpHost: z.string().refine((v) => isDomain(v) || isIPv4(v) || isIPv6(v), t("common.errmsg.host_invalid")),
+    smtpHost: z.string().refine((v) => isHostname(v), t("common.errmsg.host_invalid")),
     smtpPort: z.coerce.number().refine((v) => isPortNumber(v), t("common.errmsg.port_invalid")),
     smtpTls: z.boolean().nullish(),
     username: z.string().nonempty(t("access.form.email_username.placeholder")),
diff --git a/ui/src/components/workflow/designer/forms/BizDeployNodeConfigFieldsProviderAliyunALB.tsx b/ui/src/components/workflow/designer/forms/BizDeployNodeConfigFieldsProviderAliyunALB.tsx
index fef081f3..c17d5344 100644
--- a/ui/src/components/workflow/designer/forms/BizDeployNodeConfigFieldsProviderAliyunALB.tsx
+++ b/ui/src/components/workflow/designer/forms/BizDeployNodeConfigFieldsProviderAliyunALB.tsx
@@ -110,7 +110,8 @@ const getSchema = ({ i18n = getI18n() }: { i18n?: ReturnType<typeof getI18n> })
         .string()
         .nullish()
         .refine((v) => {
-          return !v || isDomain(v!, { allowWildcard: true });
+          if (!v) return true;
+          return isDomain(v, { allowWildcard: true });
         }, t("common.errmsg.domain_invalid")),
     })
     .superRefine((values, ctx) => {
diff --git a/ui/src/components/workflow/designer/forms/BizDeployNodeConfigFieldsProviderAliyunCLB.tsx b/ui/src/components/workflow/designer/forms/BizDeployNodeConfigFieldsProviderAliyunCLB.tsx
index 9b36ef4d..d4ff6ad5 100644
--- a/ui/src/components/workflow/designer/forms/BizDeployNodeConfigFieldsProviderAliyunCLB.tsx
+++ b/ui/src/components/workflow/designer/forms/BizDeployNodeConfigFieldsProviderAliyunCLB.tsx
@@ -110,7 +110,8 @@ const getSchema = ({ i18n = getI18n() }: { i18n?: ReturnType<typeof getI18n> })
         .string()
         .nullish()
         .refine((v) => {
-          return !v || isDomain(v!, { allowWildcard: true });
+          if (!v) return true;
+          return isDomain(v, { allowWildcard: true });
         }, t("common.errmsg.domain_invalid")),
     })
     .superRefine((values, ctx) => {
diff --git a/ui/src/components/workflow/designer/forms/BizDeployNodeConfigFieldsProviderAliyunGA.tsx b/ui/src/components/workflow/designer/forms/BizDeployNodeConfigFieldsProviderAliyunGA.tsx
index 313f7dad..45cf0590 100644
--- a/ui/src/components/workflow/designer/forms/BizDeployNodeConfigFieldsProviderAliyunGA.tsx
+++ b/ui/src/components/workflow/designer/forms/BizDeployNodeConfigFieldsProviderAliyunGA.tsx
@@ -97,7 +97,8 @@ const getSchema = ({ i18n = getI18n() }: { i18n?: ReturnType<typeof getI18n> })
         .string()
         .nullish()
         .refine((v) => {
-          return !v || isDomain(v!);
+          if (!v) return true;
+          return isDomain(v);
         }, t("common.errmsg.domain_invalid")),
     })
     .superRefine((values, ctx) => {
diff --git a/ui/src/components/workflow/designer/forms/BizDeployNodeConfigFieldsProviderAliyunWAF.tsx b/ui/src/components/workflow/designer/forms/BizDeployNodeConfigFieldsProviderAliyunWAF.tsx
index 9f80e8f0..b6b864b0 100644
--- a/ui/src/components/workflow/designer/forms/BizDeployNodeConfigFieldsProviderAliyunWAF.tsx
+++ b/ui/src/components/workflow/designer/forms/BizDeployNodeConfigFieldsProviderAliyunWAF.tsx
@@ -150,7 +150,8 @@ const getSchema = ({ i18n = getI18n() }: { i18n?: ReturnType<typeof getI18n> })
         .string()
         .nullish()
         .refine((v) => {
-          return !v || isDomain(v!, { allowWildcard: true });
+          if (!v) return true;
+          return isDomain(v, { allowWildcard: true });
         }, t("common.errmsg.domain_invalid")),
     })
     .superRefine((values, ctx) => {
diff --git a/ui/src/components/workflow/designer/forms/BizDeployNodeConfigFieldsProviderBaiduCloudAppBLB.tsx b/ui/src/components/workflow/designer/forms/BizDeployNodeConfigFieldsProviderBaiduCloudAppBLB.tsx
index 8436db06..69a8b56f 100644
--- a/ui/src/components/workflow/designer/forms/BizDeployNodeConfigFieldsProviderBaiduCloudAppBLB.tsx
+++ b/ui/src/components/workflow/designer/forms/BizDeployNodeConfigFieldsProviderBaiduCloudAppBLB.tsx
@@ -110,7 +110,8 @@ const getSchema = ({ i18n = getI18n() }: { i18n?: ReturnType<typeof getI18n> })
         .string()
         .nullish()
         .refine((v) => {
-          return !v || isDomain(v!, { allowWildcard: true });
+          if (!v) return true;
+          return isDomain(v, { allowWildcard: true });
         }, t("common.errmsg.domain_invalid")),
     })
     .superRefine((values, ctx) => {
diff --git a/ui/src/components/workflow/designer/forms/BizDeployNodeConfigFieldsProviderBaiduCloudBLB.tsx b/ui/src/components/workflow/designer/forms/BizDeployNodeConfigFieldsProviderBaiduCloudBLB.tsx
index 5ffe68a9..b500801b 100644
--- a/ui/src/components/workflow/designer/forms/BizDeployNodeConfigFieldsProviderBaiduCloudBLB.tsx
+++ b/ui/src/components/workflow/designer/forms/BizDeployNodeConfigFieldsProviderBaiduCloudBLB.tsx
@@ -110,7 +110,8 @@ const getSchema = ({ i18n = getI18n() }: { i18n?: ReturnType<typeof getI18n> })
         .string()
         .nullish()
         .refine((v) => {
-          return !v || isDomain(v!, { allowWildcard: true });
+          if (!v) return true;
+          return isDomain(v, { allowWildcard: true });
         }, t("common.errmsg.domain_invalid")),
     })
     .superRefine((values, ctx) => {
diff --git a/ui/src/components/workflow/designer/forms/BizDeployNodeConfigFieldsProviderJDCloudALB.tsx b/ui/src/components/workflow/designer/forms/BizDeployNodeConfigFieldsProviderJDCloudALB.tsx
index 34319ee8..16f7c241 100644
--- a/ui/src/components/workflow/designer/forms/BizDeployNodeConfigFieldsProviderJDCloudALB.tsx
+++ b/ui/src/components/workflow/designer/forms/BizDeployNodeConfigFieldsProviderJDCloudALB.tsx
@@ -110,7 +110,8 @@ const getSchema = ({ i18n = getI18n() }: { i18n?: ReturnType<typeof getI18n> })
         .string()
         .nullish()
         .refine((v) => {
-          return !v || isDomain(v!, { allowWildcard: true });
+          if (!v) return true;
+          return isDomain(v, { allowWildcard: true });
         }, t("common.errmsg.domain_invalid")),
     })
     .superRefine((values, ctx) => {
diff --git a/ui/src/components/workflow/designer/forms/BizDeployNodeConfigFieldsProviderUCloudUALB.tsx b/ui/src/components/workflow/designer/forms/BizDeployNodeConfigFieldsProviderUCloudUALB.tsx
index a726c4b3..ff01ceff 100644
--- a/ui/src/components/workflow/designer/forms/BizDeployNodeConfigFieldsProviderUCloudUALB.tsx
+++ b/ui/src/components/workflow/designer/forms/BizDeployNodeConfigFieldsProviderUCloudUALB.tsx
@@ -111,7 +111,8 @@ const getSchema = ({ i18n = getI18n() }: { i18n?: ReturnType<typeof getI18n> })
         .string()
         .nullish()
         .refine((v) => {
-          return !v || isDomain(v);
+          if (!v) return true;
+          return isDomain(v);
         }, t("common.errmsg.domain_invalid")),
     })
     .superRefine((values, ctx) => {
diff --git a/ui/src/components/workflow/designer/forms/BizDeployNodeConfigFieldsProviderVolcEngineALB.tsx b/ui/src/components/workflow/designer/forms/BizDeployNodeConfigFieldsProviderVolcEngineALB.tsx
index 784e983b..20e85964 100644
--- a/ui/src/components/workflow/designer/forms/BizDeployNodeConfigFieldsProviderVolcEngineALB.tsx
+++ b/ui/src/components/workflow/designer/forms/BizDeployNodeConfigFieldsProviderVolcEngineALB.tsx
@@ -110,7 +110,8 @@ const getSchema = ({ i18n = getI18n() }: { i18n?: ReturnType<typeof getI18n> })
         .string()
         .nullish()
         .refine((v) => {
-          return !v || isDomain(v!, { allowWildcard: true });
+          if (!v) return true;
+          return isDomain(v, { allowWildcard: true });
         }, t("common.errmsg.domain_invalid")),
     })
     .superRefine((values, ctx) => {