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From Jo Rhett <>
Subject Re: Q. about spam directed towards highest MX Record?
Date Wed, 18 Oct 2006 17:43:04 GMT
In our experience the mail which goes to 50 without trying 10 is always 
spam.  We kept trying to think of a way to reasonably check for this, 
and allow it through if the lower MX was actually busy...

Matt wrote:
> Just to clarify here.... You are talking about doing something like:
>   1200   IN   MX   10
>   1200   IN   MX    50
> You all are saying that most of the spam should be coming in MX 50 right?
> I have to admit I've tried this, but it seems like mail continues to
> come into the MX 50 even when the primary servers are available.    Is
> it not correct that the 50 should NOT be tried until the 10 is
> unavailable?  Or do I have that backwards?

Jo Rhett
Network/Software Engineer
Net Consonance

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