diff --git a/src/main/java/com/Nunbody/domain/Windyflo/service/WindyfloService.java b/src/main/java/com/Nunbody/domain/Windyflo/service/WindyfloService.java
index ce4f3b4..440e47f 100644
--- a/src/main/java/com/Nunbody/domain/Windyflo/service/WindyfloService.java
+++ b/src/main/java/com/Nunbody/domain/Windyflo/service/WindyfloService.java
@@ -24,13 +24,13 @@ public EmailResDto createMail(WindyfloReq windyfloReq) throws IOException {
         EmailResDto emailResDto = new EmailResDto("", "", "");
         while (emailResDto.template().isEmpty() || emailResDto.header().isEmpty() || emailResDto.body().isEmpty()) {
 //            ConversationQARes result = windyfloMailClient.findMailInVectorDB(windyfloReq.prompt());
-////            emailResDto = extractEmailTemplate(result.getText());
+//            emailResDto = extractEmailTemplate(result.getText());
 //            if (result.getText().equals("Hmm, I'm not sure")) {
                 emailResDto = extractEmailTemplate(windyfloMailClient.createMail(windyfloReq.prompt()));
-////            }
+//            }
 //            else
 //                emailResDto = extractEmailTemplate(result.getText());
-////            System.out.println(result.getText());
+
         }
         return emailResDto;
     }
diff --git a/src/main/java/com/Nunbody/domain/mail/service/MailManageService.java b/src/main/java/com/Nunbody/domain/mail/service/MailManageService.java
index d399779..4ef54de 100644
--- a/src/main/java/com/Nunbody/domain/mail/service/MailManageService.java
+++ b/src/main/java/com/Nunbody/domain/mail/service/MailManageService.java
@@ -68,7 +68,7 @@ private String validateImap(ValidateRequestDto validateRequestDto) throws Messag
             Store store = createStore(prop);
             store.connect(host, id, password);
             return "성공";
-        } catch (AuthenticationFailedException e) {
+        } catch (Exception e) {
             String errorMessage = e.getMessage();
             if (errorMessage.contains("Please check your username, password")) {
                 // Handle username or password error
@@ -86,6 +86,9 @@ private String validateImap(ValidateRequestDto validateRequestDto) throws Messag
             if (errorMessage.contains("IMAP access")) {
                 throw new InvalidValueException(IMAP_ERROR);
             }
+            if (errorMessage.contains("Couldn't connect to host")) {
+                throw new InvalidValueException(IMAP_ERROR);
+            }
         }
         return null;
     }
diff --git a/src/main/java/com/Nunbody/external/WindyfloMailClient.java b/src/main/java/com/Nunbody/external/WindyfloMailClient.java
index baf87b7..18edc8b 100644
--- a/src/main/java/com/Nunbody/external/WindyfloMailClient.java
+++ b/src/main/java/com/Nunbody/external/WindyfloMailClient.java
@@ -13,8 +13,8 @@
 @Service
 @RequiredArgsConstructor
 public class WindyfloMailClient {
-    private final String FIND_MAIL_URL = "https://windyflo.com/api/v1/prediction/2eb15033-681a-410b-8577-2b69d8e309d4";
-    private final String CREATE_MAIL_URL = "https://windyflo.com/api/v1/prediction/f66b8ade-2393-4a1a-ae48-a23c258b460a";
+    private final String FIND_MAIL_URL = "https://windyflo.com/api/v1/prediction/05d769b1-0a34-49c5-83d3-6b92c1d650f8";
+    private final String CREATE_MAIL_URL = "https://windyflo.com/api/v1/prediction/fd835f04-0889-4f19-8d97-508901854a76";
     private final RestTemplate restTemplate;
 
     public ConversationQARes findMailInVectorDB(String question) {
diff --git a/src/main/java/com/Nunbody/global/error/ErrorCode.java b/src/main/java/com/Nunbody/global/error/ErrorCode.java
index 5d0a65c..74da579 100644
--- a/src/main/java/com/Nunbody/global/error/ErrorCode.java
+++ b/src/main/java/com/Nunbody/global/error/ErrorCode.java
@@ -9,7 +9,7 @@
 @RequiredArgsConstructor(access = AccessLevel.PRIVATE)
 public enum ErrorCode {
     BAD_REQUEST(HttpStatus.BAD_REQUEST, "잘못된 요청입니다."),
-    INTERNAL_SERVER_ERROR(HttpStatus.BAD_REQUEST, "서버 내부에서 문제가 발생했습니다."),
+    INTERNAL_SERVER_ERROR(HttpStatus.INTERNAL_SERVER_ERROR, "서버 내부에서 문제가 발생했습니다."),
     NOT_FOUND(HttpStatus.BAD_REQUEST, "해당 로그인 정보는 존재하지 않습니다."),
     UNAUTHORIZED(HttpStatus.BAD_REQUEST, "권한이 없습니다."),
     // Success