Why can't I send emails with attachments anymore?

Why wont it let me send emails with attachments?

• I have just changed my server to yahoo, with a new email address(obviously!) and i have sent out a couple of emails with a couple of attachments. what i dont understand is that the one i sent abroad to family seems to have worked fine as i have had nothing back to say this has failed to send. however, the email with attachment i am trying to send in this country keeps coming back from postmaster saying that this has failed to send through hotmail????? please help, as im confussed and dont get it? thank you for any answers you can give me.

• Answer:

  If you are getting mail back from hotmail with "mailer daemon" then you have failed to put the correct recipient address. If you are having problems sending FROM hotmail - then be aware that Hotmail MAY cap the size of an attachment - various mail servers have various limits on sizes of attachments. Yahoo has a special LARGE FILE at the left hand side...if you are having problems due to size of file,try this...