drop the Date header using the Postmark API transport

symfony · fabpot · Apr 30, 2025 · Apr 23, 2025 · Apr 29, 2025 · 2db187aec384f476e8f8d5e55be38c735419e37f
commit 2db187aec384f476e8f8d5e55be38c735419e37f
diff --git a/src/Symfony/Component/Mailer/Bridge/Postmark/Tests/Transport/PostmarkApiTransportTest.php b/src/Symfony/Component/Mailer/Bridge/Postmark/Tests/Transport/PostmarkApiTransportTest.php
@@ -69,6 +69,18 @@ public function testCustomHeader()
        $this->assertEquals(['Name' => 'foo', 'Value' => 'bar'], $payload['Headers'][0]);
    }

+    public function testBypassHeaders()
+    {
+        $email = (new Email())->date(new \DateTimeImmutable());
+        $envelope = new Envelope(new Address('alice@system.com'), [new Address('bob@system.com')]);
+
+        $transport = new PostmarkApiTransport('ACCESS_KEY');
+        $method = new \ReflectionMethod(PostmarkApiTransport::class, 'getPayload');
+        $payload = $method->invoke($transport, $email, $envelope);
+
+        $this->assertArrayNotHasKey('Headers', $payload);
+    }
+
    public function testSend()
    {
        $client = new MockHttpClient(function (string $method, string $url, array $options): ResponseInterface {

diff --git a/src/Symfony/Component/Mailer/Bridge/Postmark/Transport/PostmarkApiTransport.php b/src/Symfony/Component/Mailer/Bridge/Postmark/Transport/PostmarkApiTransport.php
@@ -91,7 +91,7 @@ private function getPayload(Email $email, Envelope $envelope): array
            'Attachments' => $this->getAttachments($email),
        ];

-        $headersToBypass = ['from', 'to', 'cc', 'bcc', 'subject', 'content-type', 'sender', 'reply-to'];
+        $headersToBypass = ['from', 'to', 'cc', 'bcc', 'subject', 'content-type', 'sender', 'reply-to', 'date'];
        foreach ($email->getHeaders()->all() as $name => $header) {
            if (\in_array($name, $headersToBypass, true)) {
                continue;