Description of problem:
When sending mail using "mail" got this SELinux AVC denial.

Version-Release number of selected component (if applicable):
mailx-8.1.1-46.fc7
postfix-2.4.3-2.fc7
selinux-policy-targeted-2.6.4-26.fc7
selinux-policy-2.6.4-26.fc7


How reproducible:
Reproducible everytime.

Steps to Reproduce:
1. Execute following command on shell:
   echo hi |mail -s hi root
  
Actual results:
Got SELinux AVC denial

Expected results:
Should get no SELinux AVC denial.

Additional info:
Summary
    SELinux is preventing /usr/libexec/postfix/local (postfix_local_t) "read
    write" to (null) (unlabeled_t).

Detailed Description
    SELinux denied access requested by /usr/libexec/postfix/local. It is not
    expected that this access is required by /usr/libexec/postfix/local 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 (null), restorecon -v (null) 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 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
    http://bugzilla.redhat.com/bugzilla/enter_bug.cgi against this package.

Additional Information        

Source Context                system_u:system_r:postfix_local_t
Target Context                system_u:object_r:unlabeled_t
Target Objects                (null) [ file ]
Affected RPM Packages         postfix-2.4.3-2.fc7 [application]
Policy RPM                    selinux-policy-2.6.4-26.fc7
Selinux Enabled               True
Policy Type                   targeted
MLS Enabled                   True
Enforcing Mode                Permissive
Plugin Name                   plugins.catchall_file
Host Name                     chatteau.d.lf
Platform                      Linux chatteau.d.lf 2.6.22.1-27.fc7 #1 SMP Tue Jul
                              17 17:19:58 EDT 2007 x86_64 x86_64
Alert Count                   11
First Seen                    Sat 21 Jul 2007 07:12:19 PM IST
Last Seen                     Sun 22 Jul 2007 10:07:05 PM IST
Local ID                      b369abcd-ae5d-4a16-a19c-60368c8cb5ff
Line Numbers                  

Raw Audit Messages            

avc: denied { read, write } for comm="local" cwd="/var/spool/postfix" dev=08:15
egid=0 euid=0 exe="/usr/libexec/postfix/local" exit=0 fsgid=0 fsuid=0 gid=0
inode=10849240 item=1 items=2 mode=0100755 name="[eventpoll]"
obj=system_u:object_r:ld_so_t:s0 ogid=0 ouid=0 path=(null) pid=7807 rdev=00:00
scontext=system_u:system_r:postfix_local_t:s0 sgid=0
subj=system_u:system_r:postfix_local_t:s0 suid=0 tclass=file
tcontext=system_u:object_r:unlabeled_t:s0 tty=(none) uid=0