squirrelmail / postfix mail lost policy 1.17.30-2.80

[Jeremy Ardley]

Hi,

On fedora core 3 - out of the box plus some upgrades. My current setup has

policycoreutils-1.18.1-2.9
selinux-policy-targeted-1.17.30-2.80
squirrelmail-1.4.3a-6.FC3
dovecot-0.99.11-1.FC3.4

I can send mail normally from my system except when I use squirrelmail. 
The mail is quietly dropped without being sent and a copy is moved into 
my sent items folder.

When I check the messages log I see the following avc entries

Feb 24 17:14:46 mail kernel: audit(1109236486.039:0): avc:  denied  { 
read append } for  pid=7589 exe=/bin/bash 
path=/var/lib/squirrelmail/prefs/jeremy.abook dev=dm-0 ino=6438914 
scontext=user_u:system_r:httpd_sys_script_t t 
context=root:object_r:httpd_var_lib_t tclass=file
Feb 24 17:14:46 mail kernel: audit(1109236486.128:0): avc:  denied  { 
create } for  pid=7589 exe=/usr/sbin/sendmail.postfix 
scontext=user_u:system_r:httpd_sys_script_t 
tcontext=user_u:system_r:httpd_sys_script_t tclass=unix_ dgram_socket
Feb 24 17:14:46 mail kernel: audit(1109236486.136:0): avc:  denied  { 
search } for  pid=7589 exe=/usr/sbin/sendmail.postfix name=spool 
dev=dm-0 ino=4030501 scontext=user_u:system_r:httpd_sys_script_t 
tcontext=system_u:object _r:var_spool_t tclass=dir
Feb 24 17:14:46 mail kernel: audit(1109236486.137:0): avc:  denied  { 
create } for  pid=7589 exe=/usr/sbin/sendmail.postfix 
scontext=user_u:system_r:httpd_sys_script_t 
tcontext=user_u:system_r:httpd_sys_script_t tclass=unix_ dgram_socket

I have seen previous correspondence regarding similar faults but nothing 
I have tried has improved things. Is there a definitive fix I can apply?

Thanks

Jeremy