Why is it that sometimes i send an email and it says mail failure demon something like that?

It means you have sent it to an invalid addy. Either you typed it wrong or the person changed addy.

That is bcoz your mail reaches the server(another big computer) and then it sends to the recipient When the email id doesnt exist ,theres huge traffic.or inbox of recipient is full the server returns ur mail sayin deamon failure hope u got it...b y

it means the email address u sent an email to is either not an existing account or their mailbox may be to capacity. sometimes they do it cuz of those two answers. i suggest following up with ur friends and keeping up to date with the email addresses they use.

it's because the address it was sent to is no longer available or that the address you sent it to doesnt exist. you may have to check if you spelled the address right.

it happens to me. it means u hav typed the email address in rong. sumtimes it annoys me becoz i typed the address perfectly but it means there is another problem lyk the email is temporarily unavailable. try another time

Usually it's a problem with the spelling of the persons email address, check closely and send again.

It means that the email wasn't delivered to the address you specified, because it doesn't exist or other technical problems. The most common cause of the failure to deliver is that the addres wasn't typed correctly.