diff --git a/app/utils.py b/app/utils.py
index a5ebb88..2fee2a7 100644
--- a/app/utils.py
+++ b/app/utils.py
@@ -30,6 +30,9 @@ class CustomSMTPServer(smtpd.SMTPServer):
         logger.info(f"Initializing SMTP server on {localaddr}")
         super().__init__(localaddr, remoteaddr)
         
+    # 定义允许的域名列表
+    ALLOWED_DOMAINS = ['nosqli.com', 'email.nosqli.com']
+        
     def process_message(self, peer, mailfrom, rcpttos, data, **kwargs):
         try:
             logger.debug(f"Connection from peer: {peer}")
@@ -44,7 +47,8 @@ class CustomSMTPServer(smtpd.SMTPServer):
             # 验证收件人域名
             valid_recipients = []
             for rcpt in rcpttos:
-                if not rcpt.endswith('@nosqli.com'):
+                is_valid = any(rcpt.endswith(f'@{domain}') for domain in self.ALLOWED_DOMAINS)
+                if not is_valid:
                     logger.warning(f"Rejected mail to {rcpt}: invalid domain")
                 else:
                     valid_recipients.append(rcpt)