Gaby L:
> Hi
>  I scan with my postfix server with NMap from other location.
> The NMAP creats report smtp port open (It is OK) but apear Postfix smtpd and 
> other information about MTA program.
> I dont want to apear any information about my MTA server.

To disclose no information, close the SMTP port.

Seriously.

Even when you change the smtpd_banner value to say "$myhostname
ESMTP Sendmail" (this text MUST start with the hostname), the
server's replies (especially error messages) still reveal that it's
really Postfix.

        Wietse

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