While this isn't an osTicket problem, it *is* a problem with Apache2/php5-fpm on Ubuntu 13.10.The .ini isn't linked from php's config for Apache. It's in /etc/php5/conf.d, and it needs to be in /etc/php5/apache2/conf.d.This command will resolve the issue:ln /etc/php5/conf.d/imap.ini /etc/php5/apache2/conf.d/20-imap.iniReload php5-fpm and apache, and you should be good to go:service php5-fpm reloadservice apache2 reload