mail: restart apps using email addon

move this logic from frontend to backend

src/platform.js

@@ -8,6 +8,7 @@ exports = module.exports = {
     onDashboardLocationSet,
     onDashboardLocationChanged,
     onMailServerLocationChanged,
+    onMailServerIncomingDomainsChanged,
 
     getStatus
 };
@@ -251,3 +252,12 @@ async function onMailServerLocationChanged(auditSource) {
     const appsUsingEmail = installedApps.filter((a) => !!a.manifest.addons?.email || a.manifest.addons?.sendmail?.requiresValidCertificate);
     await safe(apps.configureApps(appsUsingEmail, { scheduleNow: true }, auditSource), { debug });
 }
+
+async function onMailServerIncomingDomainsChanged(auditSource) {
+    assert.strictEqual(typeof auditSource, 'object');
+
+    // mark apps using email addon to be reconfigured
+    const [, installedApps] = await safe(apps.list());
+    const appsUsingEmail = installedApps.filter((a) => !!a.manifest.addons?.email);
+    await safe(apps.configureApps(appsUsingEmail, { scheduleNow: true }, auditSource), { debug });
+}