What's the deal with all the Mailer-Daemon, phony returned mail in my inbox?

Answer 1

If these are not mail that you sent, someone has put your email address in their Reply to box in Mail options. This is done many times by spammers to keep from getting their mail returned. The addresses the spammers use are generated by a computer program, and many of them are not valid.

Answer 2

You are simply getting spam mail.
The people who are sending you this email have something to sell you. Anything from penny stocks, to prescription drugs, to ways to increase various parts of your anatomy etc., etc.
Since most people delete these sales messages right away, they try to fool you into opening and reading their sales message. So they give a fake title to make you think that something went wrong, and force you to open the mail and start reading it.
MY ADVICE: Do not open these messages. Simply delete them, or better yet, mark them as SPAM.
Cheers,
Dennis

Answer 3

It is an automated email sent to you when you compose a letter and send it to a certain email that dosent exist.
THe email address you sent your letter too was wrong.

Answer 4

that means that somebody has put a message from you into their spam box - you are getting a return notification, look at bottom and you will read that it was a message you had sent perhaps days ago

Answer 5

This will help explain:

http://search.yahoo.com/search?p=mailer+daemon&sp=1&fr2=sp-top&fr=sbc-web&tab=&btn=Search&ei=UTF-8&SpellState=n-4022585759_q-ToWcz10QTAt27ytSAHp9EgABAA%40%40

Good Luck

Answer 6

It just means you didn't type the email address properly I think.

Answer 7

you have the address wrong or the person your sending to doesn't have an account