sendmail.cf에 아래의 내용을 추가해 주세요.

#### Sobig.worm
HSubject: $>Check_Sobig
D{Sobigmsg}Access Denied - This message may contain a virus.

SCheck_Sobig
RThank you! $#error $: 550 ${Sobigmsg}
RYour details $#error $: 550 ${Sobigmsg}
RRe: Thank you! $#error $: 550 ${Sobigmsg}
RRe: Details! $#error $: 550 ${Sobigmsg}
RRe: Re: My details $#error $: 550 ${Sobigmsg}
RRe: Approved $#error $: 550 ${Sobigmsg}
RRe: Your application $#error $: 550 ${Sobigmsg}
RRe: Wicked screensaver $#error $: 550 ${Sobigmsg}
RRe: That movie $#error $: 550 ${Sobigmsg}


$#error앞은 <tab>입니다


################################
## Worm Virus 퇴치위한 스크립트
################################
#### Mydoom.worm
HSubject: $>Check_mydoom
D{Sobigmsg}Access Denied - This message may contain a virus.

SCheck_mydoom
RThank you! $#error $: 550 ${Sobigmsg}
RHi $#error $: 550 ${Sobigmsg}
RTest  $#error $: 550 ${Sobigmsg}
RHello  $#error $: 550 ${Sobigmsg}
RStatus $#error $: 550 ${Sobigmsg}
RYour details  $#error $: 550 ${Sobigmsg}
RRe: Thank you! $#error $: 550 ${Sobigmsg}
RRe: Details!  $#error $: 550 ${Sobigmsg}