Reverse MX = registered MTA.
Same idea like handling nameservers and networks.
Registered MTA together = registered smtp channel.
Full doc (roaming, dhcp, example, ...)
http://www.awot.fi/cgi-bin/textdb/browser/showfile?cust=awkoulutus&subdir=dns&doc=reverse_mx
We have tested all our customers smtp connection in last days and it
works allways if sender MTA has reverse dns. Reverse domain =
in-addr.arpa is also tree, so it must works ... if NS works.
That page include also shell script example which search ip's network
and so it's simple to make reverse mx query. Reverse is also nice
domain-tree .
Ofcource this is not full answer of spam, but I think that it's much
more easier to communicate with registred nameservers and mta-servers as
with all servers ...
-jukka-
--
______________________________________________________________________
Karjalan ATK-Awot Oy, Jukka Inkeri
Jukka dot Inkeri at Awot dot Fi
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