Connection Filtering Exchange 2003

Somehow our connection filtering fails on the primairy domain. When we do a telnet, from a blacklisted server, we recieve a 250 2.1.5  test@primairydomain.com, so we are able to send mail.

When we do the same with a secondairy domain we recieve 550 5.7.1 The IP-Address was rejected............

What could be the problem ? Our server is responsible for multiple domainnames, but only with the primairy domain connection filtering won't work anymore.
systeembhrAsked:
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MegaNuk3Commented:
Ok, thanks for the update feel free to close the question
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MegaNuk3Commented:
when are you getting the 550 5.7.1? after the HELO/EHLO or after the MAIL FROM: ?
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systeembhrAuthor Commented:
after the rcpt to: test@secondairydomain.com, but we  should have this after rcpt to:test@primairydomain.com
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MegaNuk3Commented:
proper connection filtering is as soon as you press enter after the mail from, you should get 550 5.7.0 "access denied"

5.7,1 is normally "relay denied"

is the @secondarydomain.com domain hosted on the Exchange server you are telneting into?
By default Exchange will accept anonymous messages to domains it owns (for example from the internet)
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systeembhrAuthor Commented:
Yes, both the domains are hosted on the exchange server. The server isn't relaying anything. I thought that 550 means, your server is blacklisted........
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MegaNuk3Commented:
have a look at:
http://support.microsoft.com/kb/823866

and you will see 550 5.7.0 "access denied" half way down the page for the "MAIL FROM:" command

try telnet into the server again and do mail from: me@externaldomain.com and then rcpt to: you@secondarydomain.com and see what happens. it should accept the message.
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systeembhrAuthor Commented:
Problem solved.......the domain was in the placed in the accept list, so mail always is accepted, even when it was send from a blacklisted domain.
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systeembhrAuthor Commented:
problem solved
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