Private Communication

One day, after I logged in to my e-mail account, I discovered that new mail was waiting for me in my mail box. The lengthy message was prefaced by the heading:
"From: Maildemon@<machine>: Your message could not be sent ..etc" " Reason: Address unknown..."
Upon scanning this returned letter, I discovered that it had not been written by me at all, and that the intended recipient and sender were thousands of miles away, apparently the unfortunate victims of a random mailer screw-up. The first sentence of that letter, though, I will always remember:
"My dearest Janice:"
"At last, we have a method of non-verbal communication which is completely private...
"
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