Quoting adam beecher (lists at beecher.net):
> I know how to hide the version number for ftp and http, how do I do it for
> smtp?
>> 220 johnhoop.beecher.net ESMTP Sendmail __8.11.6/8.11.6__; Tue, 13 Jan 2004
> 10:07:34 GMT
I'd assume you'd still want the hostname and time, so
change
SmtpGreetingMessage=$j Sendmail $v/$Z; $b
to
SmtpGreetingMessage=$j $b
There is no real valid reason to do this, to be honest, it's
not going to stop worms at all, and any attacker will probably
not been thrown off too much by this...but it's your choice.
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