North American Network Operators Group

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

  • From: Nils Ketelsen
  • Date: Thu Feb 03 09:59:46 2005

On Thu, Feb 03, 2005 at 05:42:07PM +0530, Suresh Ramasubramanian 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.