Thanks for your responses.

I still don't get it to work...
I found that I can get a PHP-file activated at
/bin/sh: /home/<USERNAME>/domains/elgg.<OURDOMAIN>.nl/public_html/elgg/<MYPHPSCRIPT>.php
I had to set permissions for that file, to refrain from getting 'Permission denied'

However, when I put
/bin/sh: /home/<USERNAME>/domains/elgg.<OURDOMAIN>.nl/public_html/elgg/cron/minute/
or
/bin/sh: /home/<USERNAME>/domains/elgg.<OURDOMAIN>.nl/public_html/elgg/cron/minute
in a cron job, I get 'No such file or directory'.

Do I have to set specific rights to a certain file? Do I have to run anything? There is no file nor directory 'cron' in my elgg-directory.

The server I currently use is not yet available on the internet without redirecting in my hosts-file, but that should not prevent it from working with its own cron jobs, should it?

Thanks for (more) help...

Ronald

However, when I put
/bin/sh: /home/<USERNAME>/domains/elgg.<OURDOMAIN>.nl/public_html/elgg/cron/minute/
or
/bin/sh: /home/<USERNAME>/domains/elgg.<OURDOMAIN>.nl/public_html/elgg/cron/minute
in a cron job, I get 'No such file or directory'.

You need to do a wget https://elgg.mydomain.nl/elgg/cron/minute

This is not the same as executing a .php file. Please read the documentation carefully. Or read Nikolai's comment again that does the same as the documentation.

Thanks, Jerome Bakker.

The cron job now gets activated every minute.

However, the output (send in mail, while testing) says 'Scheme missing'. It does not seem to handle the expected function(s). Do you have any clue where I should look to solve this?

Ronald