PHP mail does not get sent, how do I debug?

Question

I have been trying to send email for registration, invitations and so on.

On local development, emails get sent. However once on the server no mails arrive.

I

Answer 1

According to your comment above, it looks like your sendmail path is either wrong or commented out in your php.ini. It should be something like this:

sendmail_path = /usr/sbin/sendmail -t -i

If you're unsure where your sendmail binary resides, you may find it by using:

whereis sendmail