From: Brent Clark <brentgclarklist@gmail.com>
To: netfilter@vger.kernel.org
Subject: Re: Using iptables for throttling SMTP traffic
Date: Tue, 02 Nov 2010 11:30:05 +0200 [thread overview]
Message-ID: <4CCFDA1D.40907@gmail.com> (raw)
In-Reply-To: <AANLkTinMmFLt=23wMYdGKcrtLxdAGgCyRqJSbP2g0_iJ@mail.gmail.com>
On 01/11/2010 21:07, Alex wrote:
> My hope is to block hundreds of connections on my mail server from
> bulk mail senders like constantcontact, as well as the flood of
> connections from spam bots that are rejected by zen anyway.
>
> How can I tell what rules are currently in place for a particular
> IP? In other words, I see log entries for the initial block, but it
> doesn't appear that an actual rule is added, correct?
Hiya
Why dont you do this at the application level. There many way to do this.
Have you looked at greylisting?
You make no mention of what MTA you are using. But you can set up a MTA
Gateway (Basically a MTA in front of your real MTA).
HTH
Brent Clark
next prev parent reply other threads:[~2010-11-02 9:30 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-11-01 19:07 Using iptables for throttling SMTP traffic Alex
2010-11-02 9:30 ` Brent Clark [this message]
2010-11-02 14:11 ` Alex
2010-11-02 9:55 ` Pascal Hambourg
2010-11-02 11:01 ` Jan Engelhardt
-- strict thread matches above, loose matches on Subject: below --
2010-11-28 16:02 Denial-of-Service attack on UDP-port 5060 (SIP/VoIP) Secure-SIP-Server
2010-11-28 18:59 ` Pascal Hambourg
2010-11-28 21:31 ` Secure-SIP-Server
2010-11-30 13:14 ` Using iptables for throttling SMTP traffic Secure-SIP-Server
2010-11-30 13:24 ` Jan Engelhardt
2010-11-30 14:01 ` lst_hoe02
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