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PIX firewall shows ports open even when disabled

Hi to all,

I have a pix 525 version 7.2(2), the problem is that when i make a port scanning using Nmap to a mail server that i have published using a static nat in the pix (from a dmz to the outside interface) i get in the results that "all" the ports are open (from 1 to 65535) but in the monitoring of the pix i see all the "denies" for the traffic that i have not allowed (i only have 4 ports open and then is the implicit deny any any in the acl).

Any ideas what could be causing this??

This post is the same as the one "Pix gives the impression that a port is open when it is not" but i guess that one got a little confusing.

Thanks in advance for your help.

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