fix: mail 인증 문제 수정

src/libs/mailer.ts

@@ -16,6 +16,7 @@ export async function sendEmail({ to, cc, subject, content }: EmailParams): Prom
     port: Number(process.env.SMTP_PORT),
     secure: process.env.SMTP_SECURE === 'true',
     requireTLS: true,
+    tls: { rejectUnauthorized: false },
     auth: {
       user: process.env.SMTP_USER,
       pass: process.env.SMTP_PASSWORD,