What does it mean when your mail is undeliverable?

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Tags

1. #intended
2. #incorrect
3. #costs
4. #address
5. #undeliverable
6. #because
7. #recipient
8. #returning
9. #beyond
10. #reaching
11. #problem
12. #destroying
13. #addressed
14. #forwarding
15. #incomplete
16. #clunky
17. #illegible