Re: tlug: Bulk mailers

[Christopher Wiles <wileyc@example.com>]

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tlug note from Christopher Wiles <wileyc@example.com>
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On Thu, 22 May 1997, Stephen J. Turnbull wrote:

> Do I need a firewall, or are there mailers that can be configured
> (like wu-ftpd) to reject certain hosts?  Or can I do this with
> "hosts.deny"?  (I guess that requires a TCP wrapper, tcpd?)

There's a set of rules for sendmail that tell blacklisted machines to go
away (it does identification via the HELO command, I think).  The drawback
is that it won't stop email that has been sent (or relayed) via a
victimized open SMTP server.

I've been dropping hosts like hotmail.com into the /dev/null section of my
.procmailrc ... that seems to do the trick.

--	Chris (wileyc@example.com)

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