diff --git a/server/emails/index.ts b/server/emails/index.ts
index c1c2bc87..f0ec0f46 100644
--- a/server/emails/index.ts
+++ b/server/emails/index.ts
@@ -3,6 +3,7 @@ export * from "@server/emails/sendEmail";
 import nodemailer from "nodemailer";
 import config from "@server/lib/config";
 import logger from "@server/logger";
+import SMTPTransport from "nodemailer/lib/smtp-transport";
 
 function createEmailClient() {
     const emailConfig = config.getRawConfig().email;
@@ -13,7 +14,7 @@ function createEmailClient() {
         return;
     }
 
-    return nodemailer.createTransport({
+    const settings = {
         host: emailConfig.smtp_host,
         port: emailConfig.smtp_port,
         secure: emailConfig.smtp_secure || false,
@@ -21,7 +22,15 @@ function createEmailClient() {
             user: emailConfig.smtp_user,
             pass: emailConfig.smtp_pass
         }
-    });
+    } as SMTPTransport.Options;
+
+    if (emailConfig.smtp_tls_reject_unathorized !== undefined) {
+        settings.tls = {
+            rejectUnauthorized: emailConfig.smtp_tls_reject_unathorized
+        };
+    }
+
+    return nodemailer.createTransport(settings);
 }
 
 export const emailClient = createEmailClient();
diff --git a/server/lib/config.ts b/server/lib/config.ts
index 61ca3d66..2cc39788 100644
--- a/server/lib/config.ts
+++ b/server/lib/config.ts
@@ -160,6 +160,7 @@ const configSchema = z.object({
             smtp_user: z.string().optional(),
             smtp_pass: z.string().optional(),
             smtp_secure: z.boolean().optional(),
+            smtp_tls_reject_unathorized: z.boolean().optional(),
             no_reply: z.string().email().optional()
         })
         .optional(),