diff --git a/packages/services/emails/src/environment.ts b/packages/services/emails/src/environment.ts
index a7db028d0..dc20b790a 100644
--- a/packages/services/emails/src/environment.ts
+++ b/packages/services/emails/src/environment.ts
@@ -56,6 +56,7 @@ const SMTPEmailModel = zod.object({
   EMAIL_PROVIDER_SMTP_PORT: NumberFromString,
   EMAIL_PROVIDER_SMTP_AUTH_USERNAME: zod.string(),
   EMAIL_PROVIDER_SMTP_AUTH_PASSWORD: zod.string(),
+  EMAIL_PROVIDER_SMTP_REJECT_UNAUTHORIZED: zod.boolean().optional()
 });
 
 const SendmailEmailModel = zod.object({
@@ -154,6 +155,9 @@ const emailProviderConfig =
           user: email.EMAIL_PROVIDER_SMTP_AUTH_USERNAME,
           pass: email.EMAIL_PROVIDER_SMTP_AUTH_PASSWORD,
         },
+        tls: {
+          rejectUnauthorized: email.EMAIL_PROVIDER_SMTP_REJECT_UNAUTHORIZED
+        }
       } as const)
     : email.EMAIL_PROVIDER === 'sendmail'
     ? ({ provider: 'sendmail' } as const)
diff --git a/packages/services/emails/src/providers.ts b/packages/services/emails/src/providers.ts
index 2e5d458ec..b32fb0f77 100644
--- a/packages/services/emails/src/providers.ts
+++ b/packages/services/emails/src/providers.ts
@@ -91,6 +91,9 @@ function smtp(config: SMTPEmailProviderConfig, emailFrom: string) {
       user: config.auth.user,
       pass: config.auth.pass,
     },
+    tls: {
+      rejectUnauthorized: config.tls.rejectUnauthorized
+    }
   });
 
   return {