Outlook Oasis ain't big enough for the two of us, Billy the Pup. And you've made one fatal mistake.

Oh yeah? And what’s that, Sheriff Wild Ear?

Your Authentication is sound. But you’re trying to send to a recipient who doesn't even exist. 550 bounce ’em, boys!

Bad dog! Bounce back to where you came from!

All right then. Who's next?

Recipient MTA

Welp,
we tried.

Don't be such a scaredy dog!

Sheriff Wild Ear Hickok runs Outlook Oasis’ MTA. He’ll be able to sniff out our next stop.

Wait, backspace up. I thought we already visited the MTA?!

That was the sending MTA, Jordo! This is the receiving MTA. For ruff sake, almost like you’ve never hand delivered an email before!

Got a Outlook Oasis delivery, eh? authentication looks to be in order. Great IP Reputation, too! And yeah, I’ve heard of your recipient!

No bouncing for you! Calamity Jane, our fearless MDA, can help lead you to the recipient’s inbox. She’s just ‘round back, thataway!

You gotta be kidding me.

WHO SAID THAT?!

Recipient MDA

For the love of POP3, I can’t deliver your email to the MUA’s mailbox right now! I just got my tail handed to me by a spam filter!

Mary was just telling me how you're the most rootin' tootinest MDA out there, Miss Calamity. Please. We really need your help getting to the inbox.

I am pretty rootin’ tootin’...

This is weird

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