Is there a way to view or be informed about bounces sent through CiviCRM other than through the CiviMail component (i.e. send now, transactional emails, etc.)? I discovered that a contact who should have been receiving important emails about an event had an incorrect email address and so wasn't receiving the emails. Neither were we getting notified that there was a problem. I'd like to avoid this!
Found my own answer. Our bounces@... address is set up as a catch-all, so bounces (or other badly addressed email) come to it, but CiviMail only processes bounces from emails sent through that component. Other emails are sitting in the inbox of the bounces@ account, waiting to be read, or forwarded through judicious use of a filter.
Leaving this question for posterity.
Philip - there is also this Extension - Transactional Mail - Bounce and Tracking Handler - that Fuzion made to give better visibility of the non-civi-mail emails which you might find useful