open relay problem (again)

Hello

I have the "open relay" problem with exchange server. I have just done all operations read in microsoft KB and others.
Every configuration was checked but if I do the tests in some web sites., in some case it say "relay accepted".
Do you have other suggestion for me?
thank you

gtuzzatoAsked:
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kieran_bConnect With a Mentor Commented:
Your IP is in a DUL or Dynamic User List - meaning you are never getting off that list.

You need to talk to your ISP and request a new static IP, or relay all your mail through them.
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kieran_bCommented:
the open relay tests are iffy at best, test it yourself.

From the server;
Start > run > telnet localhost 25
ehlo
mail from:someone@gmail.com
rcpt to:someoneelse@gmail.com
data
subject:this is a test
test
.

If it says "cannot relay for..." anywhere in there, you are fine.
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gtuzzatoAuthor Commented:
thanks for your help

ok, it say unable to relay, but I have the problem the my server is in some blacklist
like this
http://www.mail-abuse.com/cgi-bin/lookup?ip_address=84.253.140.250
and others......
other suggest?
thank you again
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