I have the forums set to email me every time there is a new topic and when I get replies. I dont always get everyone I should, I dont know why, but I do get most.
Like today, I had 15 emails from the forums telling me of replies or new topics, then when I log in I click the show unread posts since last visit and there where 3 in there, and I never got emails on those, yet I got them on the rest.
When the server sends email it does it by the normal php method through the main server in apache. So if there is any kind of connection problem that might be part of the reason, sadly I have no way of finding any kind of log for the sending of the emails through the server, would be great if there was one, then I could see if the problem was there or not.
Of course other times it isnt the server or the forums but instead the users email server blocking the email because it thinks it is spam. Some servers will auto delete email it thinks is spam at a high degree and spam that has a less chance of being real spam gets sent to your spam box.
Now I did change something lately, the emails from the server use to have my address in the from address, and it was filling my gmail account lol So I changed it to
[email protected], so it is possible that if you had my email in your allowed list and not the whole tweaking.com domain that your spam filter is blocking it.
Try adding
[email protected] to you spam box allow list and see if that helps
Shane