Philipp, Thank you for your quick response. The problem was indeed caused by AppArmor. I had not realized that it had been enabled by default in testing.
Fixing the problem required installing the apparmor-utils package (which contains aa-complain). Then running the following command resolved the issue: aa-complain /etc/apparmor.d/usr.sbin.ejabberdctl -- Soren Stoutner Small Business Tech Solutions so...@smallbusinesstech.net 623-262-6169