Did you check your account profile. This is what it said on mine under Defaults settings


You can still override all those options on every single message that you post. But if you sellect it here, it will be a default value (pre-selected value).

Allow Visitors to send personal messages and emails to you, after you post a message in CureZone Forums .
Get Notifications On Direct Replies ( receive PMs in your curezone Inbox )
Receive automatic PM notifications every time someone replies to a message you posted in CureZone Forums .
Get Notifications On Thread Replies ( receive PMs in your curezone Inbox )
Receive automatic PM notifications every time someone replies to any message in any thread in which you posted at least one message.

These previous 3 values are only defaults (pre-selected values). You can easily override those defaults every time you post a new message into any forum or any blog. But, to avoid overriding defaults all the time, here you have an option of selecting the pre-selected value.