Following a hard drive corruption I have reinstalled the latest version of CentOS and all current patch files.
For most applications I selected the default options. By doing this I expected that the packages would play nice with one another and I could customize as necessary.
Setting SELinux to enforce I encountered all sorts of problems - but most were resolvable, save for Dovecot, Procmail (for spamc), and an odd one with Apache.
Given that these were all installed with the CentOS install defaults, I can't believe I am the only one with these issues but finding a solution has not been self evident. Hoping someone here can help.
For Dovecot I get the following: SELinux is preventing dovecot (dovecot_t) "create" to <Unknown> (dovecot_t). For complete SELinux messages. run sealert -l e1b070ab-586a-4c5a-befe-b6a46b9ab992
For procmail I get the following: SELinux is preventing procmail (procmail_t) "execute" to ./spamc (spamc_exec_t). For complete SELinux messages. run sealert -l 0a554689-4948-4edf-9964-dddbfe6a2492 SELinux is preventing sh (procmail_t) "read" to ./spamc (spamc_exec_t). For complete SELinux messages. run sealert -l 1f1ebd83-412d-4e93-a36f-6f3d34c663df
For Apache it's even more strange - When started I get: Syntax error on line 283 of /etc/httpd/conf/httpd.conf DocumentRoot must be directory
But it is a directory, has the correct permissions and I have even run chcon -R -h -t httpd_sys_content_t /web/www/ in an effort to correct the problem. I run a virtual server too, and in trying to find a fix for this that may be a problem - but first things first.
All the other issues I had I could resolve when I ran the specified "sealert" tag and followed the suggested instructions - but those above don't budge. When I go to the fedora.redhat.com/docs/selinux-fq- fc5 site to take on making a local policy module I am quickly getting lost . The option to simply disable SElinux with respect to Apache, Dovecote or anything else is suggested - but not something I see in the GUI window, and I have not figured out how to do it from the command line.
Again, because these are default packages, I hope that someone else knows how to resolve these.
With respect to the to reports from SELinux regarding Dovecot and promail, here is a bit more info:
The info and Raw Audit message for dovecot_t is: Source Context system_u:system_r:dovecot_t:s0 Target Context system_u:system_r:dovecot_t:s0 Target Objects None [ socket ] Source dovecot Source Path /usr/sbin/dovecot Port <Unknown> Host trailrunner Source RPM Packages dovecot-1.0.7-7.el5 Target RPM Packages Policy RPM selinux-policy-2.4.6-203.el5 Selinux Enabled True Policy Type targeted MLS Enabled True Enforcing Mode Enforcing Plugin Name catchall Host Name trailrunner Platform Linux trailrunner 2.6.18-128.1.6.el5xen #1 SMP Wed Apr 1 10:38:05 EDT 2009 i686 athlon Alert Count 2 First Seen Wed Apr 29 15:39:51 2009 Last Seen Wed Apr 29 15:47:31 2009 Local ID e1b070ab-586a-4c5a-befe-b6a46b9ab992 Line Numbers
Raw Audit Messages host=trailrunner type=AVC msg=audit(1241041651.976:33): avc: denied { create } for pid=3884 comm="dovecot" scontext=system_u:system_r:dovecot_t:s0 tcontext=system_u:system_r:dovecot_t:s0 tclass=socket host=trailrunner type=SYSCALL msg=audit(1241041651.976:33): arch=40000003 syscall=102 success=no exit=-13 a0=1 a1=bf851070 a2=9e45030 a3=3e1 items=0 ppid=3883 pid=3884 auid=4294967295 uid=0 gid=0 euid=0 suid=0 fsuid=0 egid=0 sgid=0 fsgid=0 tty=(none) ses=4294967295 comm="dovecot" exe="/usr/sbin/dovecot" subj=system_u:system_r:dovecot_t:s0 key=(null)
The Raw Audit Message for Procmail is: Source Context system_u:system_r:procmail_t:s0 Target Context system_u:object_r:spamc_exec_t:s0 Target Objects ./spamc [ file ] Source procmail Source Path /usr/bin/procmail Port <Unknown> Host trailrunner Source RPM Packages procmail-3.22-17.1.el5.centos Target RPM Packages Policy RPM selinux-policy-2.4.6-203.el5 Selinux Enabled True Policy Type targeted MLS Enabled True Enforcing Mode Enforcing Plugin Name catchall_file Host Name trailrunner Platform Linux trailrunner 2.6.18-128.1.6.el5xen #1 SMP Wed Apr 1 10:38:05 EDT 2009 i686 athlon Alert Count 29 First Seen Wed Apr 29 15:40:40 2009 Last Seen Wed Apr 29 16:25:40 2009 Local ID 0a554689-4948-4edf-9964-dddbfe6a2492 Line Numbers
Raw Audit Messages host=trailrunner type=AVC msg=audit(1241043940.918:166): avc: denied { execute } for pid=3344 comm="procmail" name="spamc" dev=dm-0 ino=18762675 scontext=system_u:system_r:procmail_t:s0 tcontext=system_u:object_r:spamc_exec_t:s0 tclass=file host=trailrunner type=SYSCALL msg=audit(1241043940.918:166): arch=40000003 syscall=11 success=no exit=-13 a0=8ef1d90 a1=8ef1020 a2=8ef32d8 a3=1 items=0 ppid=3343 pid=3344 auid=4294967295 uid=0 gid=12 euid=0 suid=0 fsuid=0 egid=12 sgid=12 fsgid=12 tty=(none) ses=4294967295 comm="procmail" exe="/usr/bin/procmail" subj=system_u:system_r:procmail_t:s0 key=(null)