Author: Dean Brooks Date: To: exim-users Subject: Re: [exim] Innovative Host Blacklisting Idea
On Fri, Jun 15, 2007 at 07:39:39AM -0700, Marc Perkel wrote:
> Only if you start with the highest numbered MX records and connect 25
> times in a 3 day period.
The biggest concern is if you ever have a problem with your mail
server that causes connections to either be refused, delayed or
deferred. It may be rare, but it could happen (i.e. brief
misconfiguration of Exim that rejects/defers connections, high server
load, high connection limits reached, etc).
In that event, you could be hit with hundreds (or thousands, whatever)
of legitimate connection attempts to your higher MX address. You'll
need to have some mechanism in place to ignore those connections when
that happens or you'll end up having to manually reset your tracking
database.
