sendmail - dns lookup problem

re - after reboot is sendmail.cf autogenerated again with those error messages inside. Can you help me? Thank you very much Viktor Matys -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]

sendmail - dns lookup problem

see true server name? Thank you very much Viktor Matys -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]