Sep 14 09:29:22 server1 postfix/smtpd[4889]: NOQUEUE: reject: RCPT from mail-la0-f53.google.com[209.85.215.53]: 550 5.1.1 <user@example.net>: Recipient address rejected: User unknown in virtual mailbox table; from=<user@gmail.com> to=<user@example.net> proto=ESMTP helo=<mail-la0-f53.google.com>
Sep 14 09:29:22 server1 postfix/smtpd[4889]: disconnect from mail-la0-f53.google.com[209.85.215.53]