diff --git a/src/main/java/com/sounganization/botanify/common/config/mail/MailConfig.java b/src/main/java/com/sounganization/botanify/common/config/mail/MailConfig.java
index 62efd63..c4f417b 100644
--- a/src/main/java/com/sounganization/botanify/common/config/mail/MailConfig.java
+++ b/src/main/java/com/sounganization/botanify/common/config/mail/MailConfig.java
@@ -30,13 +30,11 @@ public JavaMailSender javaMailSender() {
         mailSender.setPort(port);
         mailSender.setUsername(username);
         mailSender.setPassword(password);
-        mailSender.setDefaultEncoding("UTF-8");
 
         Properties props = mailSender.getJavaMailProperties();
-        props.put("mail.smtps.auth", "true");
-        props.put("mail.smtps.ssl.enable", "true");
-        props.put("mail.smtps.ssl.trust", "smtps.hiworks.com");
-        props.put("mail.transport.protocol", "smtps");
+        props.put("mail.transport.protocol", "smtp");
+        props.put("mail.smtp.auth", "true");
+        props.put("mail.smtp.starttls.enable", "true");
         props.put("mail.debug", "true");
 
         return mailSender;