diff --git a/app/Actions/Server/StartSentinel.php b/app/Actions/Server/StartSentinel.php
index 071f3ec46..289ab9ebe 100644
--- a/app/Actions/Server/StartSentinel.php
+++ b/app/Actions/Server/StartSentinel.php
@@ -4,7 +4,6 @@
 
 use App\Events\SentinelRestarted;
 use App\Models\Server;
-use App\Models\ServerSetting;
 use Lorisleiva\Actions\Concerns\AsAction;
 
 class StartSentinel
@@ -23,10 +22,7 @@ public function handle(Server $server, bool $restart = false, ?string $latestVer
         $metricsHistory = data_get($server, 'settings.sentinel_metrics_history_days');
         $refreshRate = data_get($server, 'settings.sentinel_metrics_refresh_rate_seconds');
         $pushInterval = data_get($server, 'settings.sentinel_push_interval_seconds');
-        $token = data_get($server, 'settings.sentinel_token');
-        if (! ServerSetting::isValidSentinelToken($token)) {
-            throw new \RuntimeException('Invalid sentinel token format. Token must contain only alphanumeric characters, dots, hyphens, and underscores.');
-        }
+        $token = $server->settings->ensureValidSentinelToken();
         $endpoint = data_get($server, 'settings.sentinel_custom_url');
         $debug = data_get($server, 'settings.is_sentinel_debug_enabled');
         $mountDir = '/data/coolify/sentinel';
diff --git a/app/Http/Controllers/UploadController.php b/app/Http/Controllers/UploadController.php
index 96fbd7193..6c3dda402 100644
--- a/app/Http/Controllers/UploadController.php
+++ b/app/Http/Controllers/UploadController.php
@@ -29,6 +29,7 @@ class UploadController extends BaseController
         'archive.gz',
         'bz2',
         'xz',
+        'dmp',
     ];
 
     public function upload(Request $request)
diff --git a/app/Livewire/Notifications/Email.php b/app/Livewire/Notifications/Email.php
index 364163ff8..724dd0bac 100644
--- a/app/Livewire/Notifications/Email.php
+++ b/app/Livewire/Notifications/Email.php
@@ -45,7 +45,7 @@ class Email extends Component
     public ?string $smtpPort = null;
 
     #[Validate(['nullable', 'string', 'in:starttls,tls,none'])]
-    public ?string $smtpEncryption = null;
+    public ?string $smtpEncryption = 'starttls';
 
     #[Validate(['nullable', 'string'])]
     public ?string $smtpUsername = null;
diff --git a/app/Models/ServerSetting.php b/app/Models/ServerSetting.php
index 8d85c8932..79f62f4b7 100644
--- a/app/Models/ServerSetting.php
+++ b/app/Models/ServerSetting.php
@@ -2,6 +2,7 @@
 
 namespace App\Models;
 
+use Illuminate\Contracts\Encryption\DecryptException;
 use Illuminate\Database\Eloquent\Casts\Attribute;
 use Illuminate\Database\Eloquent\Model;
 use Illuminate\Support\Facades\Log;
@@ -144,19 +145,54 @@ protected static function booted()
      * Validate that a sentinel token contains only safe characters.
      * Prevents OS command injection when the token is interpolated into shell commands.
      */
-    public static function isValidSentinelToken(string $token): bool
+    public static function isValidSentinelToken(?string $token): bool
     {
+        if ($token === null) {
+            return false;
+        }
+
         return (bool) preg_match('/\A[a-zA-Z0-9._\-+=\/]+\z/', $token);
     }
 
-    public function generateSentinelToken(bool $save = true, bool $ignoreEvent = false)
+    /**
+     * Returns a valid sentinel token, regenerating it if the stored value is
+     * empty, undecryptable, or otherwise invalid. Throws only when regeneration
+     * still fails to produce a valid token.
+     */
+    public function ensureValidSentinelToken(): string
+    {
+        try {
+            $token = $this->sentinel_token;
+        } catch (DecryptException) {
+            $token = null;
+        }
+
+        if (! self::isValidSentinelToken($token)) {
+            // Clear undecryptable raw value so Eloquent's dirty-check won't try to
+            // decrypt the bad original during save().
+            $attrs = $this->getAttributes();
+            $attrs['sentinel_token'] = null;
+            $this->setRawAttributes($attrs, true);
+
+            $this->generateSentinelToken(save: true, ignoreEvent: true);
+            $this->refresh();
+            $token = $this->sentinel_token;
+        }
+
+        if (! self::isValidSentinelToken($token)) {
+            throw new \RuntimeException('Sentinel token invalid after regeneration. Allowed characters: a-z, A-Z, 0-9, dot, underscore, hyphen, plus, slash, equals.');
+        }
+
+        return $token;
+    }
+
+    public function generateSentinelToken(bool $save = true, bool $ignoreEvent = false): string
     {
         $data = [
             'server_uuid' => $this->server->uuid,
         ];
-        $token = json_encode($data);
-        $encrypted = encrypt($token);
-        $this->sentinel_token = $encrypted;
+        $token = encrypt(json_encode($data));
+        $this->sentinel_token = $token;
         if ($save) {
             if ($ignoreEvent) {
                 $this->saveQuietly();
diff --git a/app/Traits/HasMetrics.php b/app/Traits/HasMetrics.php
index 7ed82cc91..20b3752f5 100644
--- a/app/Traits/HasMetrics.php
+++ b/app/Traits/HasMetrics.php
@@ -2,7 +2,9 @@
 
 namespace App\Traits;
 
-use App\Models\ServerSetting;
+use App\Models\Server;
+use Illuminate\Contracts\Encryption\DecryptException;
+use Illuminate\Support\Facades\Log;
 
 trait HasMetrics
 {
@@ -28,9 +30,15 @@ private function getMetrics(string $type, int $mins, string $valueField): ?array
         $from = now()->subMinutes($mins)->toIso8601ZuluString();
         $endpoint = $this->getMetricsEndpoint($type, $from);
 
-        $token = $server->settings->sentinel_token;
-        if (! ServerSetting::isValidSentinelToken($token)) {
-            throw new \Exception('Invalid sentinel token format. Please regenerate the token.');
+        $previousToken = null;
+        try {
+            $previousToken = $server->settings->sentinel_token;
+        } catch (DecryptException) {
+            // fall through to ensureValidSentinelToken which will regenerate
+        }
+        $token = $server->settings->ensureValidSentinelToken();
+        if ($token !== $previousToken) {
+            Log::warning('Regenerated sentinel token during metrics read; sentinel container restart required', ['server_id' => $server->id]);
         }
 
         $response = instant_remote_process(
@@ -61,10 +69,10 @@ private function getMetrics(string $type, int $mins, string $valueField): ?array
 
     private function isServerMetrics(): bool
     {
-        return $this instanceof \App\Models\Server;
+        return $this instanceof Server;
     }
 
-    private function getMetricsServer(): \App\Models\Server
+    private function getMetricsServer(): Server
     {
         return $this->isServerMetrics() ? $this : $this->destination->server;
     }
diff --git a/bootstrap/helpers/applications.php b/bootstrap/helpers/applications.php
index 48e0a8c78..4707b0a07 100644
--- a/bootstrap/helpers/applications.php
+++ b/bootstrap/helpers/applications.php
@@ -12,8 +12,9 @@
 use Spatie\Url\Url;
 use Visus\Cuid2\Cuid2;
 
-function queue_application_deployment(Application $application, string $deployment_uuid, ?int $pull_request_id = 0, string $commit = 'HEAD', bool $force_rebuild = false, bool $is_webhook = false, bool $is_api = false, bool $restart_only = false, ?string $git_type = null, bool $no_questions_asked = false, ?Server $server = null, ?StandaloneDocker $destination = null, bool $only_this_server = false, bool $rollback = false, ?string $docker_registry_image_tag = null)
+function queue_application_deployment(Application $application, string $deployment_uuid, ?int $pull_request_id = 0, ?string $commit = null, bool $force_rebuild = false, bool $is_webhook = false, bool $is_api = false, bool $restart_only = false, ?string $git_type = null, bool $no_questions_asked = false, ?Server $server = null, ?StandaloneDocker $destination = null, bool $only_this_server = false, bool $rollback = false, ?string $docker_registry_image_tag = null)
 {
+    $commit = $commit ?: ($application->git_commit_sha ?: 'HEAD');
     $application_id = $application->id;
     $deployment_link = Url::fromString($application->link()."/deployment/{$deployment_uuid}");
     $deployment_url = $deployment_link->getPath();
diff --git a/tests/Feature/QueueApplicationDeploymentCommitTest.php b/tests/Feature/QueueApplicationDeploymentCommitTest.php
new file mode 100644
index 000000000..ac6be5c9e
--- /dev/null
+++ b/tests/Feature/QueueApplicationDeploymentCommitTest.php
@@ -0,0 +1,107 @@
+<?php
+
+use App\Jobs\ApplicationDeploymentJob;
+use App\Models\Application;
+use App\Models\ApplicationDeploymentQueue;
+use App\Models\Environment;
+use App\Models\Project;
+use App\Models\Server;
+use App\Models\StandaloneDocker;
+use App\Models\Team;
+use Illuminate\Foundation\Testing\RefreshDatabase;
+use Illuminate\Support\Facades\Bus;
+
+uses(RefreshDatabase::class);
+
+beforeEach(function () {
+    Bus::fake([ApplicationDeploymentJob::class]);
+
+    $this->team = Team::factory()->create();
+    $this->server = Server::factory()->create(['team_id' => $this->team->id]);
+    $this->destination = StandaloneDocker::factory()->create([
+        'server_id' => $this->server->id,
+        'network' => 'test-network-'.fake()->unique()->word(),
+    ]);
+    $this->project = Project::factory()->create(['team_id' => $this->team->id]);
+    $this->environment = Environment::factory()->create(['project_id' => $this->project->id]);
+});
+
+function makeApplication(int $environmentId, int $destinationId, ?string $gitCommitSha): Application
+{
+    $attributes = [
+        'environment_id' => $environmentId,
+        'destination_id' => $destinationId,
+        'destination_type' => StandaloneDocker::class,
+    ];
+
+    if ($gitCommitSha !== null) {
+        $attributes['git_commit_sha'] = $gitCommitSha;
+    }
+
+    return Application::factory()->create($attributes);
+}
+
+describe('queue_application_deployment commit resolution', function () {
+    test('uses application git_commit_sha when commit parameter omitted', function () {
+        $pinnedSha = 'abc123def456abc123def456abc123def456abc1';
+        $application = makeApplication($this->environment->id, $this->destination->id, $pinnedSha);
+
+        $result = queue_application_deployment(
+            application: $application,
+            deployment_uuid: 'test-deploy-uuid-1',
+        );
+
+        expect($result['status'])->toBe('queued');
+
+        $deployment = ApplicationDeploymentQueue::where('deployment_uuid', 'test-deploy-uuid-1')->first();
+        expect($deployment)->not->toBeNull();
+        expect($deployment->commit)->toBe($pinnedSha);
+    });
+
+    test('falls back to HEAD when both commit parameter and git_commit_sha are unset', function () {
+        $application = makeApplication($this->environment->id, $this->destination->id, 'HEAD');
+
+        $result = queue_application_deployment(
+            application: $application,
+            deployment_uuid: 'test-deploy-uuid-2',
+        );
+
+        expect($result['status'])->toBe('queued');
+
+        $deployment = ApplicationDeploymentQueue::where('deployment_uuid', 'test-deploy-uuid-2')->first();
+        expect($deployment->commit)->toBe('HEAD');
+    });
+
+    test('explicit commit parameter overrides application git_commit_sha', function () {
+        $pinnedSha = 'abc123def456abc123def456abc123def456abc1';
+        $webhookSha = '111222333444555666777888999000aaabbbccc1';
+        $application = makeApplication($this->environment->id, $this->destination->id, $pinnedSha);
+
+        $result = queue_application_deployment(
+            application: $application,
+            deployment_uuid: 'test-deploy-uuid-3',
+            commit: $webhookSha,
+        );
+
+        expect($result['status'])->toBe('queued');
+
+        $deployment = ApplicationDeploymentQueue::where('deployment_uuid', 'test-deploy-uuid-3')->first();
+        expect($deployment->commit)->toBe($webhookSha);
+    });
+
+    test('treats empty string commit parameter as unset and uses git_commit_sha', function () {
+        $pinnedSha = 'abc123def456abc123def456abc123def456abc1';
+        $application = makeApplication($this->environment->id, $this->destination->id, $pinnedSha);
+
+        $result = queue_application_deployment(
+            application: $application,
+            deployment_uuid: 'test-deploy-uuid-4',
+            commit: '',
+        );
+
+        expect($result['status'])->toBe('queued');
+
+        $deployment = ApplicationDeploymentQueue::where('deployment_uuid', 'test-deploy-uuid-4')->first();
+        expect($deployment->commit)->toBe($pinnedSha);
+    });
+});
diff --git a/tests/Feature/SentinelTokenValidationTest.php b/tests/Feature/SentinelTokenValidationTest.php
index 43048fcaa..14f24d03a 100644
--- a/tests/Feature/SentinelTokenValidationTest.php
+++ b/tests/Feature/SentinelTokenValidationTest.php
@@ -4,6 +4,7 @@
 use App\Models\ServerSetting;
 use App\Models\User;
 use Illuminate\Foundation\Testing\RefreshDatabase;
+use Illuminate\Support\Facades\DB;
 
 uses(RefreshDatabase::class);
 
@@ -78,11 +79,73 @@
         expect(ServerSetting::isValidSentinelToken(''))->toBeFalse();
     });
 
+    it('returns false for null sentinel token', function () {
+        expect(ServerSetting::isValidSentinelToken(null))->toBeFalse();
+    });
+
     it('rejects the reported PoC payload', function () {
         expect(ServerSetting::isValidSentinelToken('abc" ; id >/tmp/coolify_poc_sentinel ; echo "'))->toBeFalse();
     });
 });
 
+describe('ServerSetting::ensureValidSentinelToken', function () {
+    it('regenerates empty sentinel token via ensureValidSentinelToken', function () {
+        $settings = $this->server->settings;
+        DB::table('server_settings')->where('id', $settings->id)->update(['sentinel_token' => '']);
+
+        $settings->refresh();
+        $token = $settings->ensureValidSentinelToken();
+
+        expect($token)->not->toBeEmpty();
+        expect(ServerSetting::isValidSentinelToken($token))->toBeTrue();
+        expect($settings->fresh()->sentinel_token)->toBe($token);
+    });
+
+    it('regenerates token when stored value cannot be decrypted', function () {
+        $settings = $this->server->settings;
+        DB::table('server_settings')->where('id', $settings->id)->update(['sentinel_token' => 'not-encrypted-junk']);
+
+        $settings->refresh();
+        $token = $settings->ensureValidSentinelToken();
+
+        expect(ServerSetting::isValidSentinelToken($token))->toBeTrue();
+        expect($settings->fresh()->sentinel_token)->toBe($token);
+    });
+
+    it('returns existing valid token without regenerating', function () {
+        $settings = $this->server->settings;
+        $original = $settings->sentinel_token;
+
+        $token = $settings->ensureValidSentinelToken();
+
+        expect($token)->toBe($original);
+    });
+
+    it('throws RuntimeException only when regeneration also fails', function () {
+        $settings = $this->server->settings;
+        DB::table('server_settings')->where('id', $settings->id)->update(['sentinel_token' => '']);
+
+        $stub = new class extends ServerSetting
+        {
+            protected $table = 'server_settings';
+
+            public function generateSentinelToken(bool $save = true, bool $ignoreEvent = false): string
+            {
+                DB::table('server_settings')->where('id', $this->id)->update([
+                    'sentinel_token' => encrypt('invalid token with spaces!'),
+                ]);
+
+                return '';
+            }
+        };
+        $stub->setRawAttributes($settings->fresh()->getAttributes(), true);
+        $stub->exists = true;
+
+        expect(fn () => $stub->ensureValidSentinelToken())
+            ->toThrow(RuntimeException::class, 'Sentinel token invalid after regeneration');
+    });
+});
+
 describe('generated sentinel tokens are valid', function () {
     it('generates tokens that pass format validation', function () {
         $settings = $this->server->settings;
@@ -92,4 +155,11 @@
         expect($token)->not->toBeEmpty();
         expect(ServerSetting::isValidSentinelToken($token))->toBeTrue();
     });
+
+    it('returns the same value the cast reads back', function () {
+        $settings = $this->server->settings;
+        $returned = $settings->generateSentinelToken(save: true, ignoreEvent: true);
+
+        expect($settings->fresh()->sentinel_token)->toBe($returned);
+    });
 });