I've been encountering random instances in which my email alerts do not work and flood my system log with errors.
I've been using it for months now and it's been working flawlessly for most of the time, but that time when it does not work. It doesn't send email notifications to my users and agents. I've tested it using the diagnostic module and it sends a test email.
I don't usually find it troublesome but lately, it's bothering me now because my number of users is growing rapidly.
Your help is much appreciated.