We have dokuwiki installed on a virtual server (centos linus /apache) which is configured only for websites, with no email ports open. We have a different server configured for email.
Operating system CentOS Linux 6.8
Kernel and CPU Linux 2.6.32-642.3.1.el6.x86_64 on x86_64
Apache version 2.2.15
PHP 5
Webmin & Virtualmin
I believe this is why email is not being sent for user registration.
Would the SMTP Plugin configured with my gmail account work?
It looks to me like the answer is yes.
Later:
Well, actually it looks like I may need to have SSL enabled, get a certificate and enable openssl
See:
https://forum.dokuwiki.org/thread/14077;?unb855sess=u7d6fd7qfp4duhic5vjdq6n3h1
Maybe I could use our email server, instead, as that has SSL and certificate and has SFC, DKIM, DMARC etc?
Well, actually I don't think this will work, to have security the server sending must have the security...
Maybe I'll just register volunteer editors by hand and send them separate emails myself until we move this off the temporary server location.