RHEL5.6 selinux-policy already has sendmail_rw_pipes(spamc_t) I will add sendmail_dontaudit_rw_unix_stream_sockets(spamc_t)
Fixed in selinux-policy-2.4.6-286.el5.noarch.
Technical note added. If any revisions are required, please edit the "Technical Notes" field accordingly. All revisions will be proofread by the Engineering Content Services team. New Contents: Prior to this update, several messages were written to the audit log when Sendmail leaked file descriptors. To prevent this, the SELinux policy has been corrected, and these events are no longer logged.
An advisory has been issued which should help the problem described in this bug report. This report is therefore being closed with a resolution of ERRATA. For more information on therefore solution and/or where to find the updated files, please follow the link below. You may reopen this bug report if the solution does not work for you. http://rhn.redhat.com/errata/RHBA-2011-0026.html