North American Network Operators Group

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Re: Time to check the rate limits on your mail servers

  • From: up
  • Date: Thu Feb 03 12:22:07 2005

On Thu, 3 Feb 2005, Raymond Dijkxhoorn wrote:

> >> One additional thing that I think wasnt mentioned in the article -
> >> Make sure your MXs (inbound servers) are separate from your outbound
> >> machines, and that the MX servers dont relay email for your dynamic IP
> >> netblock. Some other trojans do stuff like getting the ppp domain name
>
> > That, on the other hand, gets you into trouble with rather stupid Spam
> > filters, that only accept mails from a server, if that server is also
> > MX for the senders domain.
> >
> > Yes, this is stupid, but that does not change the fact, that these
> > setups are out there.
>
> Start using authenticated SMTP for this.

Until the next bot implemented co-opts the pop3 client, or simply hacks
the password from the pop3 client (how strong is that encryption?).

James Smallacombe		      PlantageNet, Inc. CEO and Janitor
[email protected]							    http://3.am
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