Dear support user
Te problem is that zabbix 3.0.4 SMTP doesn't work. my smtp configuration is correct and work in other servers. zabbix says that "Support for SMTP authentication was not compiled in" . I searched the internet, according to the ZBX-9854, in order for SMTP authentication to be available, the server has to be compiled --with-libcurl. I have installed zabbix from packages (or RPM) not by source . my vm os is oraclelinux 6.7. according to the page https://www.zabbix.com/documentation/3.0/manual/config/notifications/media/email#configuration , I should have curl version 7.20 or higher, my screen shot shows that it is version 7.50. but yet I watch the same problem. what should I do? debug level is 4.

ENV:
oracle linux 6.7 - VM - Mysql 5.7 - php 5.6 - RPM Based.
libcurl version was 7.19 at first which is below the required version 7.20 . but I update it .I am not sure the problem relates to this or not, but this error message exists before and after of curl/libcurl update.