> I am ruunig a Mailserver (Sendmail) on RedhHat 9, > I suggest you plan a migration to Centos 4.4 as Redhat 9 is ancient, its version of sendmail (have you at all updated that box?) is full of security holes and even if your sendmail has been patched against its security holes, the other stuff that comes with Redhat 9 is riddled with security holes.