Add SMTP send timeout and log send report details

server.js

@@ -28,9 +28,17 @@ const CHECK_INTERVAL = 60000; // 1 minute
 const SMTP_HOST = process.env.SMTP_HOST || 'smtp-relay.brevo.com';
 const SMTP_PORT = parseInt(process.env.SMTP_PORT || '587', 10);
 const SMTP_SECURE = process.env.SMTP_SECURE === 'true' || SMTP_PORT === 465;
+const SMTP_TIMEOUT = parseInt(process.env.SMTP_TIMEOUT_MS || '15000', 10);
 let emailTransport = null;
 let emailConfigChecked = false;
 
+async function sendMailWithTimeout(transport, mailOptions, timeoutMs = SMTP_TIMEOUT) {
+    return await Promise.race([
+        transport.sendMail(mailOptions),
+        new Promise((_, reject) => setTimeout(() => reject(new Error('SMTP send timed out')), timeoutMs))
+    ]);
+}
+
 function getEmailTransport() {
     if (emailTransport || emailConfigChecked) return emailTransport;
 
@@ -111,7 +119,7 @@ async function sendAlertEmail(statusEntry) {
     const emailFrom = process.env.EMAIL_FROM;
     const emailTo = process.env.EMAIL_TO;
 
-    await transport.sendMail({
+    await sendMailWithTimeout(transport, {
         from: emailFrom,
         to: emailTo,
         subject,
@@ -231,8 +239,9 @@ async function sendStatusReportEmail() {
     }
 
     const { subject, text, html } = buildStatusReportEmail();
+    console.log(`Sending status report email via ${SMTP_HOST}:${SMTP_PORT} secure=${SMTP_SECURE} as ${smtpUser} to ${emailTo}`);
 
-    await transport.sendMail({
+    await sendMailWithTimeout(transport, {
         from: emailFrom,
         to: emailTo,
         subject,