Askbot not sending subscription emails

I am new to Askbot and I am having some problems while configuring it.

I have subscribed to get instant mails for all the activities including getting emails for questions asked by me.

I am able to get emails from the feedback form but I am not getting other email - including on asking new question, answering a question. Can some one please help me or point me on what and where to debug?

I have even tried the send_email_alerts command as well

EDIT

I debugged it little bit using pdb, and found "feed.should_send_now()" is returning False.

**138 for feed in user_feeds: 139 if feed.should_send_now() == True: 140 should_proceed = True 141 break

I am not having any idea about feed object.