Ah, good catch Bette. That one would be a trap answer for sure. And D is also correct - the '220' message is the SMTP banner, not part of the message content.
B) The '250 Message accepted for delivery' message is part of the message body - that's not correct. That's part of the SMTP response, not the message body.
Yeah, I agree with that. The envelope addresses are 'From: user@example.com' and 'To: recipient@example.com', while the header addresses are different.
Okay, let's go through the options one by one. A) The SMTP envelope addresses are different from the message header addresses - that seems correct based on the output.
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