55.1.2 CONNECTION REFUSED: Sorry, this message could not be delivered because it contains a chain message and/or an invitation to your improv show.
45.2.2 UNAUTHORIZED: Sorry, this message could not be delivered because it contains the phrase “LOL” and the recipient is an adult.
34.2.90 SPAM FILTER: Sorry, this message could not be delivered because it was sent from a Hotmail address, and it is past 1996.
45.2.13 UNAUTHORIZED: Sorry, this message could not be delivered because it contains a link to your blog(s).
34.2.1 HOST NOT FOUND: Sorry, this message cannot be delivered at this time but will be sent once the recipient is finished catching up on Game of Thrones.
45.2.21 TIMEOUT: Sorry, this message could not be delivered because it is yet another request for donation to your absolutely useless Kickstarter campaign.
34.2.2 FORBIDDEN/ACCESS DENIED: Sorry, this message could not be delivered because it’s late, you’re drunk and she broke up with you three months ago.