Why do I get "failure notice?

I sent one to my friend and got a failure notice and then tried again then it worked fine. Then I sent one to my mom and I got a failure notice. What is happening? Is anyone else having thise problem? Is Yahoo! just working on Mail or something?

Sorry Lyn G, I'm afraid that I didn't phrase my question properly. I would like to know, why I am getting a 'failure notice'? I am doing everything right this end.But I still can't get through. Thank you for your time. Yours, monk

Every time I send a reply to an email or try to forward an email, I get a "failure notice" from "Daemon" (?)....what does this mean?

I used to be able to forward e-mails to others in my address book when I thought they were good ones I wanted to share. Now every time I try to, I get a failure notice telling me that ...show more

Why can I only send out 4 e-mail's an hour?

The last two days I got 18 are more failure notice of e;mails that I did not send.

i used to send email to a hotpop.com user and even IM, but when i tried to send an email again to this recipient, a failure notice was sent to me saying that the account was closed due to inactivity. this is surprising cause a few days ago, i was talking...

I always get this email after i try to send one to someone saying that there has been an error and they could not get the email i sent to the girl i sent it to why does it do that

We had email forwarded from another address to our Yahoo email and there wasn't any problem. This "send failure" note has only started since our friends began sending mail directly to our yahoo email address. Any help would be appreciated.