For so many years I couldn't install Elgg on any of may servers. It always crashed and I gave up too easy.

Version 5.1.4 installed on the first shoot. Impressive. But had serious problems making the email system to work. The proposed config.php was not accurate and it would never work as suggested. I had to change the script completely to make it work.

My installation is working now. It send emails like a champ!

The problem was that the proposed script demands a user authentication but since the server does not require it, the whole script was unnecessary in that form. NO AUTHENTICATION IS REQUIRED FOR LOCAL EMAIL SUBMISSIONS.