New "postdrop" denial

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I have seen this denial twice in the last few days - and I think it is 
new to my system. I'm not sure whether recent updates have caused it - 
or whether my system has entered a new phase for some other reason. I 
can't think of any obvious changes I have made. Any suggestions would be 
welcome:

Summary
SELinux is preventing postdrop (postfix_postdrop_t) "getattr" to 
/var/log/httpd/error_log (httpd_log_t).
Detailed Description
[SELinux is in permissive mode, the operation would have been denied but 
was permitted due to permissive mode.]

SELinux denied access requested by postdrop. It is not expected that 
this access is required by postdrop and this access may signal an 
intrusion attempt. It is also possible that the specific version or 
configuration of the application is causing it to require additional 
access.

Allowing Access
Sometimes labeling problems can cause SELinux denials. You could try to 
restore the default system file context for /var/log/httpd/error_log,

restorecon -v '/var/log/httpd/error_log'

If this does not work, there is currently no automatic way to allow this 
access. Instead, you can generate a local policy module to allow this 
access - see FAQ 
<http://fedora.redhat.com/docs/selinux-faq-fc5/#id2961385> Or you can 
disable SELinux protection altogether. Disabling SELinux protection is 
not recommended. Please file a bug report 
<http://bugzilla.redhat.com/bugzilla/enter_bug.cgi> against this package.

Additional Information

Source Context:   	system_u:system_r:postfix_postdrop_t
Target Context:   	system_u:object_r:httpd_log_t
Target Objects:   	/var/log/httpd/error_log [ file ]
Source:   	postdrop
Source Path:   	/usr/sbin/postdrop
Port:   	<Unknown>
Host:   	C5.aardvark.com.au
Source RPM Packages:   	postfix-2.3.3-2.1.el5_2
Target RPM Packages:   	
Policy RPM:   	selinux-policy-2.4.6-255.el5_4.4
Selinux Enabled:   	True
Policy Type:   	targeted
MLS Enabled:   	True
Enforcing Mode:   	Permissive
Plugin Name:   	catchall_file
Host Name:   	C5.aardvark.com.au
Platform:   	Linux C5.aardvark.com.au 2.6.18-164.11.1.el5 #1 SMP Wed Jan 
20 07:32:21 EST 2010 x86_64 x86_64
Alert Count:   	4
First Seen:   	Wed Jan 13 16:49:57 2010
Last Seen:   	Wed Feb 24 11:42:04 2010
Local ID:   	f532f021-830c-4b05-8175-8a6887dd132b
Line Numbers:   	

Raw Audit Messages :

host=C5.aardvark.com.au type=AVC msg=audit(1266982924.689:25356): avc: 
denied { getattr } for pid=14542 comm="postdrop" 
path="/var/log/httpd/error_log" dev=dm-0 ino=29360282 
scontext=system_u:system_r:postfix_postdrop_t:s0 
tcontext=system_u:object_r:httpd_log_t:s0 tclass=file
host=C5.aardvark.com.au type=SYSCALL msg=audit(1266982924.689:25356): 
arch=c000003e syscall=5 success=yes exit=0 a0=2 a1=7fff9da1f600 
a2=7fff9da1f600 a3=0 items=0 ppid=14541 pid=14542 auid=4294967295 uid=48 
gid=48 euid=48 suid=48 fsuid=48 egid=90 sgid=90 fsgid=90 tty=(none) 
ses=4294967295 comm="postdrop" exe="/usr/sbin/postdrop" 
subj=system_u:system_r:postfix_postdrop_t:s0 key=(null)

Thanks

Richard.

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