My options are correct -- never changed anything.
Also, no email notifications when someone replies to a thread I'm subscribed to....grrrrr.....
Not sure why. Are you able to check server logs to see if the emails are getting sent??
If they are getting sent, perhaps the IP block that is sending out the emails is being blackholed due to spam, or other issues? (you'd hopefully see the bounce messages) Or the reverse DNS isn't correct on the mail server?