In the YAF-DNN module, I don't notice an SMTP setting of any kind so I assume it's piggy-backing off of DNN's SMTP settings and API. If there is a setting specific to YAF, I just haven't found it yet.

What I wanted to happen was get notified whenever anyone creates a new post in any forum. So what I did was go into each of them and click the "Watch Forum" link at the bottom of each respective forum. They now all say "Unwatch Forum" so I'd assume that I would be notified when new posts are created. This doesn't appear to be the case. I don't get any e-mails from the forums at all though. Not even replies.

Either there is a bug with that feature, an issue with the SMTP, or I'm doing it wrong. Can anyone verify which of the three is the case?

Yaf uses the dnn api to send mails, so if there are no logs in the event log sending emails trough dnn should work.

First some clarification when you watch a forum you only receive mail when a new topic is created not for replies. Only if you watch a topic then you would receive mails on replies.

There is also a setting called "Notification for all posts on all topics" that would give you notification for every new post.

But YAF will not send a mail when you are the author of the new topic or reply, did you test this with different user accounts? I will look in to it hopefully soon.

Do you have any ideas what might be causing only this module to not send emails?

Go to your User Panel > Email Notification Preferences > By Default it is set to Turn off notifications

Yes i agree this will be fixed in YAF.NET 2.2.4