I mistyped the address on an email. I received no bounce message, but eventually (when WLM was closed) I saw an error message from WLM. The outgoing message appears (only) in my WLM outbox.

1. I'm guessing that perhaps a bounce message arrived but was filtered out, possibly by one of my own filters, and has now been deleted. If that's the case, I can for the future whitelist either the sending address or subject line of bounce messages. Can you supply that information?

2. Is there any other reason why I might not have received a bounce message?