368a369,399
> <p> Here is another example for stress adaptive behaviour, which will
> immediately disconnect clients with unknown hostnames under conditions
> of stress: </p>
> 
> <blockquote>
> <pre>
> 1  /etc/postfix/<a href="postconf.5.html">main.cf</a>:
> 2      <a href="postconf.5.html#smtpd_delay_reject">smtpd_delay_reject</a> = ${stress?no}${stress:yes}
> 3      <a href="postconf.5.html#unknown_client_reject_code">unknown_client_reject_code</a> = ${stress?421}${stress:450}
> 4      <a href="postconf.5.html#smtpd_client_restrictions">smtpd_client_restrictions</a> = ${stress?reject_unknown_client_hostname}
> </pre>
> </blockquote>
> 
> <p> Translation: <p>
> 
> <ul>
> 
> <li> <p> Line 2: under conditions of stress, make postfix evaluate the
> different smtpd_*_restrictions parameters immediately. With the
> default settings, those restrictions are only evaluated after the
> client issues the first "RCPT TO" command during the SMTP dialogue.
> 
> <li> <p> Line 3: under conditions of stress, use an <a href="postconf.5.html#unknown_client_reject_code">unknown_client_reject_code</a>
> of 421, which will cause the client to be disconnected immediately.
> 
> <li> <p> Line 4: under conditions of stress, add "reject_unknown_client_hostname"
> to the list of <a href="postconf.5.html#smtpd_client_restrictions">smtpd_client_restrictions</a>.
> 
> </ul>
> 
>