On Tue, Oct 14, 2008 at 12:13:39PM +0400, Nikita Kipriyanov wrote:
> Yes, you can. See http://www.postfix.org/postconf.5.html#smtpd_delay_reject
> It is on by default, so postfix delays reject until RCPT TO; if you turn
> off that parameter, it will reject immediatly. But, not all mail
> software understand that early reject properly, so be warned.
If the host is an MX host for any domains, don't reject at connect time,
otherwise, go ahead. Consider setting a null-mx record for the system's
host name:
ahost.example.com IN MX 0 .
--
Viktor.
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