From: Mailer-Daemon <mailer-daemon@mail.sample.example>
To: Alex SAMPLE <alex@brightside.example>
Subject: Undelivered Mail Returned to Sender
Date: Wed, 22 Jul 2026 10:10:00 -0400
Message-ID: <wi-bounce-full@mail.sample.example>
MIME-Version: 1.0
Content-Type: text/plain; charset=utf-8

SAMPLE bounce: mailbox full (552 5.2.2).