diff --git a/.devcontainer/docker-compose.yml b/.devcontainer/docker-compose.yml
index e5f302f1..9934fb00 100644
--- a/.devcontainer/docker-compose.yml
+++ b/.devcontainer/docker-compose.yml
@@ -24,7 +24,7 @@ services:
     volumes:
       - .:/workspaces:cached
     environment:
-      NEXTAUTH_URL: "http://10.0.0.217:3000" # Update this to the URL of your dev environment
+      NEXTAUTH_URL: "${NEXTAUTH_URL:-http://10.0.0.217:3000}"
     networks:
       - app-network
     depends_on:
diff --git a/src/utils/mail.ts b/src/utils/mail.ts
index 0a0f560e..3289986c 100644
--- a/src/utils/mail.ts
+++ b/src/utils/mail.ts
@@ -277,10 +277,13 @@ export async function createTransporter() {
 		host: globalOptions.smtpHost,
 		port: globalOptions.smtpPort,
 		secure: globalOptions.smtpUseSSL,
-		auth: {
-			user: globalOptions.smtpUsername,
-			pass: globalOptions.smtpPassword,
-		},
+		auth:
+			globalOptions.smtpUsername || globalOptions.smtpPassword
+				? {
+						user: globalOptions.smtpUsername,
+						pass: globalOptions.smtpPassword,
+				  }
+				: undefined,
 		tls: {
 			rejectUnauthorized: true,
 			minVersion: "TLSv1.2",