If your LimeSurvey installation dosen’t send email (send e-mail failure) i suggest:
- verify
httpd_can_sendmailwith/usr/sbin/getsebool httpd_can_sendmail - if
httpd_can_sendmailis off to dosudo setsebool -P httpd_can_sendmail 1
The -P option is for persistent, otherwise next boot you must set it