<html>
  <head>
    <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
  </head>
  <body>
    <div class="moz-cite-prefix">On 27. 10. 20 13:08, Damian wrote:<br>
    </div>
    <blockquote type="cite"
      cite="mid:6f4642fa-ec2e-7856-6e01-a042ca476102@arcsin.de">
      <blockquote type="cite">
        <pre class="moz-quote-pre" wrap="">Is there a way to have Postfix do content filtering before it resolves
the recipient address to local maibox?

</pre>
      </blockquote>
      <pre class="moz-quote-pre" wrap="">Have you tried no_address_mappings [1]?

[1] <a class="moz-txt-link-freetext" href="http://www.postfix.org/postconf.5.html#receive_override_options">http://www.postfix.org/postconf.5.html#receive_override_options</a>

</pre>
    </blockquote>
    <p><br>
    </p>
    <p>I did now and I managed to make it work by adding <i> -o
        receive_override_options=no_address_mappings</i> to 'smtp' line
      in master.cf:<br>
    </p>
    <pre># ==========================================================================
# service type  private unpriv  chroot  wakeup  maxproc command + args
#               (yes)   (yes)   (yes)   (never) (100)
# ==========================================================================
smtp      inet  n       -       n       -       1000    smtpd -o receive_override_options=no_address_mappings -o content_filter=smtp:[172.16.0.9]:10024</pre>
    <p><br>
    </p>
    <p>and removing <i>no_address_mappings</i> from the 'return' smtpd:</p>
    <pre>0.0.0.0:10025 inet      n       -       n       -       -       smtpd
  -o content_filter=
  -o smtpd_delay_reject=no
  -o smtpd_client_restrictions=permit_mynetworks,reject
  -o smtpd_helo_restrictions=
  -o smtpd_sender_restrictions=
  -o smtpd_recipient_restrictions=permit_mynetworks,reject
  -o smtpd_data_restrictions=reject_unauth_pipelining
  -o smtpd_end_of_data_restrictions=
  -o smtpd_restriction_classes=
  -o mynetworks=127.0.0.0/8,172.16.0.0/24,...
  -o smtpd_error_sleep_time=0
  -o smtpd_soft_error_limit=1001
  -o smtpd_hard_error_limit=1000
  -o smtpd_client_connection_count_limit=0
  -o smtpd_client_connection_rate_limit=0 
<b>  -o receive_override_options=no_header_body_checks,no_unknown_recipient_checks</b>
  -o local_header_rewrite_clients=
  -o local_recipient_maps=
  -o relay_recipient_maps=

</pre>
    <p><br>
    </p>
    <p>Thank you for all your help.</p>
    <p><br>
    </p>
    <div class="moz-signature">
      <div></div>
    </div>
  </body>
</html>