Extension missing: openssl

[dvukov42]

Please help with setting up email on Joomla on Synology NAS. It does not deliver mail either as php or sentmail or SMTP. Nothing goes through the global configuration

[ceford]

openssl is a php module - you will have to figure out yourself how to install it on your NAS. Google for advice. I found this: https://community.synology.com/enu/forum/1/post/124567

[AMurray]

I don't understand your question titled "Extension missing: Openssl..." and what that has to do with setting up your NAS for sending email through Joomla (perhaps concerned with email encryption protocols such as TLS/SSL?).

To use SMTP you need to enable that capability through the web server you're running on the NAS, and/or to enable the PHP extensions for sendmail or PHPMail. Alternatively, you could use an external SMTP server with an email host provider or Gmail and so forth.