Dear All I have jus migrated to centos 5 and jus wondering why n where this problem could be server A which is running for the past 2 years used as my primary dns and mail server redhat linux 8 sendmail ver-8.12.5-7 bind ver -9.2.1-9 since the server is old and is prone to all security problems i have a new machine which i have installed the following and will replace my existing redhat dns + mail server centOS 5 bind-9.3.3-8.el5 sendmail-8.13.8-2.el5 mailscanner latest spam assassin + clamav - latest dkim filter plus the lastest updates now when i send a mail to my yahoo account from my old redhat server it goes fine to inbox I disconect my old red hat server cable and plug it new centos server since both have the same IP's and when i send a mail from the centos server it goes to yahoo bulk mail and not to inbox receving is fine with both server i am jus wondering why. even i see the DKIM filter inserts a global key ( text record of my DNS ) in my mail logs and also in the yahoo when i see full headers in yahoo apprecite if someone could help me thnks and regards simon -- Network Administrator -- Network Administrator