Email status messages - what do they mean

With one of my clients I need to monitor email bounces from our mailing lists. Normally this goes relatively smoothly, as either the email goes through, or it bounces back with a 550 Recipient not found message. Sometimes the messages I get back are less familiar to me. Here is the appendix from RFC1893.

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What is my IP Address

Lately I have been wanting to find what my outside IP address is. Videotron has recently started to actually expire the lease on my IP address more frequently than once a year, so I can't remember…

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