When any member registers on my dating site, there is a separate page in his accounts section containing lots of matches of compatible partners for him or her, and on a regular, scheduled basis, a small number of matches is supposed to be randomly picked from there and sent to the member in one single email. I found out that this email sending per week, or per day, or twice per week, has suddenly stopped!!! In other words, any member is supposed to receive, say, an email template each week or each day or twice per week, containing a few matches from that page randomly picked by the site for him or her. Firstly, I suspect cron job is not running to perform this task on a regular, scheduled, repeated basis. Otherwise, the possibility of a bug on php coding preventing the effective sending out of the email is slim, though EVER PRESENT. The last possibility is that you may have to check the server's shell script as the last system admin might have written codes to disable all cron jobs effectively on the server (before we moved from old to the new server, when that old server hanged and these commands are still there, not removed), but this last possibility is only a guess !