ssmtp contains a patch which lowers the default UID value for system accounts (which affects the "root=" setting in ssmtp.conf) to <500. This does not correspond to Fedora's current default, where system accounts are <1000. See <http://fedoraproject.org/wiki/Features/1000SystemAccounts>. The patch should therefore be dropped.
Task Info: http://koji.fedoraproject.org/koji/taskinfo?taskID=4210631 Build Info: http://koji.fedoraproject.org/koji/buildinfo?buildID=328508