[100738] in RedHat Linux List
Re: log entry question
daemon@ATHENA.MIT.EDU (Anthony E. Greene)
Mon Nov 23 06:56:28 1998
Date: Mon, 23 Nov 1998 12:53:36 +0100
To: redhat-list@redhat.com
From: "Anthony E. Greene" <agreene@pobox.com>
In-Reply-To: <19981123111606.D932@adbvdesign.analog.com>
Resent-From: redhat-list@redhat.com
Reply-To: redhat-list@redhat.com
At 11:16 1998-11-23 +0000, Thomas Ribbrock (Design/DEG) wrote:
>> As for SPAM... yes, I would imagine that someone could use you
>> as a SPAM relay. I know zero about sendmail (I use qmail), so
>> I am clueless about how to configure sendmail to protect against
>> this, but it *is* a feature of Sendmail to be able to guard
>> against it. However, you have to set it up.
>
>Looks like I better have a look into that one. I'd hate to have my machine
>abused...
Take a look at /etc/mail/ip_allow, relay_allow, and name_allow. You can set
the range of hosts that may relay through your server using ip_allow and
name_allow.
You can set the domains you will relay to using relay_allow. Most SPAM
probelms can be solved using ip_allow and/or name_allow. I set mine to
allow relaying only from IP addresses on one of my organization's subnets.
If your subnet looks like 123.456.789.0 then you can restrict relaying by
editing ip_allow to add the line:
123.456.789
Note that the above is not a valid IP address and is used only as an
example.
Tony
--
Anthony E. Greene <agreene@pobox.com>
Homepage and PGP Key: <http://www.pobox.com/~agreene/>
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