[opensuse] postfix only send

hi group I´m using OpenSuse 10.1 and i need for my apache site the mail() comand. therefor i was install postfix with yast and the mails are correct send but received to. but this little computer in the corner must not receive my private mails, and i need not to install an mail-server to, so now my question: how can i configure postfix: so it send mails out, but not receive mails tnx.. frank