I see that there have been previous tickets on this issue that are closed but I am still having problems. I have a new RC5 forum not an upgrade and I am having problems with emails. I have tried all the suggestions posted in the forums and I am still having issues. The only email that seems to be working is the email that is sent to the admin when a new user registers and needs to be approved. The emails that are supposed to be sent to the users when they register are not being sent and the topic reply notification emails are not being sent. My package size is already set to zero, I'm not using SMTP email although I tried that and it did not help. I have tried disabling emails and then re-enabling but that did not help either. I have checked with my hosting provider and they tell me that they do not block any php mail functions.