>So why not set up an old box with sims and make it like the 5th priority and
>route everything to error.
>
>Any legitimate mail would get to your higher priority boxes and only
>spammers would hit the error box.

In case I wasn't clear earlier, there is no need for a separate 
physical box. In my case:

Non-authoritative answer:
4pi.com  MX  86400   5   mx.4pi.com
4pi.com  MX  86400  10   mx.secondary.com
4pi.com  MX  86400  20   spam1.4pi.com
4pi.com  MX  86400  30   spam2.4pi.com
4pi.com  MX  86400  40   spam3.4pi.com
4pi.com  MX  86400  50   spam4.4pi.com


Then, make it so that mx.4pi.com and all the spamX.4pi.com have the 
same A records. But, as has been pointed out, spam can get through 
the real secondary still, and if your main box goes down, so do all 
your low priority "secondaries" and the spam goes right through on 
the real secondary as before.

I have yet to analyze whether this setup has done much to help me (in 
fact I don't have as many fake secondaries as I imply above). As I 
said before, it can -theoretically- help. Spammers are such an odd 
mix of stupidity and dogged determination that any solution will be 
imperfect.


Stefan Jeglinski

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