Re: [Exim] Blocking incessant relay testers with Exim 4

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Szerző: Philip Hazel
Dátum:  
Címzett: Dave C.
CC: Juha Saarinen, exim-users
Tárgy: Re: [Exim] Blocking incessant relay testers with Exim 4
On Tue, 11 Jun 2002, Dave C. wrote:

> I'm not sure if there is a way to completely refuse connections from
> within exim at all. host_reject_connections does the following:
>
> # telnet 127.0.0.2 25
> Trying 127.0.0.2...
> Connected to 127.0.0.2 (127.0.0.2).
> Escape character is '^]'.
> 554 SMTP service not available


... then drops the connection. That's all it can do. True "blocking" has
to happen before the connection gets to Exim, that is, in a router or in
the host's TCP/IP stack, or using TCPWrappers or similar.


--
Philip Hazel            University of Cambridge Computing Service,
ph10@???      Cambridge, England. Phone: +44 1223 334714.