ypops trouble


New Email
I have downlaoded ypops and I had problems sending e-mails so I thaught it was ypops that had the wrong adress.

I went in miscallenous and changed the domain to ymail.com, because that is where I have my e-mail. but that was not a good choice... since then when ever I try sending an e-mail it says web page not found.

I changed it back to yahoo.com, but it still says the same thing could some one tell me what I have to fill in because I tried reinstalling ypops but the settings won't delete... so?? thx