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