On Fri, Aug 16, 2013 at 04:22:50PM -0500, lcon...@go2france.com wrote:
> postconf mail_version
> mail_version = 2.3.3
> 
> 
> uname -a
> Linux .....  2.6.18-128.2.1.el5 #1 SMP Wed Jul 8 11:54:47 EDT 2009
> x86_64 x86_64 x86_64 GNU/Linux
> 
> got an "access denied" for an IP that is in a /20 postconf confirms
> is in mynetworks

If by peer_debug in the Subject header, you are referring to the 
debug_peer_list parameter, that's generally most useful for looking 
for bugs in Postfix itself. Since you are using a version which was 
EOL four years ago, there is no point in looking for bugs.

Perhaps you'd do better here by describing the problem and goal, 
showing your "postconf -n" and relevant NON-verbose logs for one mail 
which wasn't handled as you expected.

If your smtpd(8) instance has any -o option overrides, you must show 
those as well. Pro tip: any smtpd or other daemon definition with -o 
overrides should also include a " -o syslog_name=postfix/foo" where 
"foo" is something relevant to what this instance does.

"Access denied" means a "reject" restriction or access(5) lookup 
result was encountered. There are of course 52.001 gazillion reasons 
which could cause this.

Good luck. I suggest you review this before posting again:

http://www.postfix.org/DEBUG_README.html#mail

> the only match_hostname I see is for
> smtpd_client_event_limit_exceptions
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