[TUHS] Who is running their own mail server and what do you run?
gtaylor at tnetconsulting.net
Thu Sep 21 15:20:21 AEST 2017
On 09/20/2017 09:04 PM, Robert Brockway wrote:
> This is a well established technique known as Nolisting. I believe the
> safest option is for the port to be unbound and thus for a TCP RST to be
I think I've heard of people doing nolisting before and ran across the
term within the last week.
I wonder how effective it is.
I recently wrote a gray mail server (in Perl) that ran into the problem
of the 3rd bullet point in Drawbacks. - My workaround has been to
return ICMP errors, much like nolisting probably does.
I will have to give Nolisting more thought and mess with it.
Grant. . . .
unix || die
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