Authenticate in indy 10

Giganews Newsgroups
Subject: Authenticate in indy 10
Posted by:  Borland Groups (limele…
Date: Wed, 8 Jun 2011

I use Delphi xe indy 10
using  TIdSMTP, TIdMessage,TIdSSLIOHandlerSocketOpenSSL; using
to send amil.
using GMAIL i HAVE NO problem but on another account i get

'recipient address rejected' .However the address is MY OWN mail.
I think Authenticate is the problem..
Unless any one have another idea how do i use Authenticatein in this