Spamassassin + Procmail + Lockfile + SELinux = broken

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I'm rather green, and have had some trouble deciphering a lot of the
SELinux stuff.  Any help would be great.  I'm using procmail to filter
mail through spamassassin (SA), but SELinux appears to be interfering.  I
say this because if I turn off enforcing, mail gets through properly
tagged by SA.  With SELinux on, messages are not tagged by SA.  The log
looks like this:

Jun 26 23:07:51 parsnip kernel: audit(1182917271.036:1779): enforcing=1
old_enforcing=0 auid=4294967295
Jun 26 23:07:51 parsnip dbus: avc:  received setenforce notice (enforcing=1)
Jun 26 23:08:04 parsnip kernel: audit(1182917284.795:1780): avc:  denied 
{ search } for  pid=28116 comm="spamassassin" name="tmp" dev=sda3
ino=26738689 scontext=user_u:system_r:procmail_t:s0
tcontext=system_u:object_r:tmp_t:s0 tclass=dir

My (rather ignorant) read is that procmail_t and tmp_t are not matching
(procmail does try to write a lockfile).  And what I have gleaned is that
I either need some sort of rule that somehow matches these two, or I need
to change some tags (on my /tmp directory?) to allow this to proceed.

Am I anywhere near the ballpark?  I tried audit2why to decipher this, but
it complained that it didn't understand policies outside of the range
15-20.  Audit2allow returns

                     allow procmail_t tmp_t:di search;

But I'm not sure what to do with it...

Thanks in advance for any help!

- Lowell

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