I�m hunting down an issue on Fedora Core 7 where PHP5 can�t send mail using sendmail or postfix. In /var/log/httpd/access_log we are getting sh: /usr/sbin/sendmail: Permission denied every time the mail() function is accessed, and postfix never sees any connection. This is being caused by SELinux blocking Apache from transitioning from the �httpd� role to the �mta� role – I�m just not sure what the *best* way to fix it is yet. I haven�t seen many posts about this, so stay tuned – I expect to have a fix tomorrow afternoon.