분명하진 않습니다.
 저는 레뎃 7.2입니다.
 #ps ax |grep sendmail 하셔서 sendmail 프로세스가 살아 있으면
 kill 로 죽이시고
 다시 센드메일 프로세스가 없는지 확인후 센드메일 시작
 그래도 같은 증상이라면
 /etc/services 파일을 열어서 smtp 라인을 확인합니다.
 smtp            25/tcp          mail
smtp            25/udp          mail
 여기도 이상이 없다면
 #netstat -na |grep 25 하셔서 25번 포트를
 다른 프로세스가 사용중인지도 확인 바랍니다.
 엉성한 답변이었습니다.
 
 : Mar 27 22:26:04 localhost sendmail[5336]: alias
database /etc/aliases
: rebuilt by lineageshop
: Mar 27 22:26:04 localhost sendmail[5336]: /etc/aliases: 40 aliases,
: longest 10 bytes, 395 bytes total
: Mar 27 22:26:04 localhost sendmail[5348]: starting daemon (8.11.6):
: SMTP+queueing@01:00:00
: Mar 27 22:26:04 localhost sendmail[5348]: NOQUEUE: SYSERR(root):
: opendaemonsocket: daemon MTA: cannot bind: Cannot assign requested
: address
: Mar 27 22:26:04 localhost sendmail[5348]: daemon MTA: problem
creating
: SMTP socket
: Mar 27 22:26:09 localhost sendmail[5348]: NOQUEUE: SYSERR(root):
: opendaemonsocket: daemon MTA: cannot bind: Cannot assign requested
: address
: Mar 27 22:26:09 localhost sendmail[5348]: daemon MTA: problem
creating
: SMTP socket
: Mar 27 22:26:14 localhost sendmail[5348]: NOQUEUE: SYSERR(root):
: opendaemonsocket: daemon MTA: cannot bind: Cannot assign requested
: address
: Mar 27 22:26:14 localhost sendmail[5348]: daemon MTA: problem
creating
: SMTP socket
: Mar 27 22:26:19 localhost sendmail[5348]: NOQUEUE: SYSERR(root):
: opendaemonsocket: daemon MTA: cannot bind: Cannot assign requested
: address
: Mar 27 22:26:19 localhost sendmail[5348]: daemon MTA: problem
creating
: SMTP socket
: Mar 27 22:26:24 localhost sendmail[5348]: NOQUEUE: SYSERR(root):
: opendaemonsocket: daemon MTA: cannot bind: Cannot assign requested
: address
: Mar 27 22:26:24 localhost sendmail[5348]: daemon MTA: problem
creating
: SMTP socket
: Mar 27 22:26:29 localhost sendmail[5348]: NOQUEUE: SYSERR(root):
: opendaemonsocket: daemon MTA: cannot bind: Cannot assign requested
: address
: Mar 27 22:26:29 localhost sendmail[5348]: daemon MTA: problem
creating
: SMTP socket
: Mar 27 22:26:34 localhost sendmail[5348]: NOQUEUE: SYSERR(root):
: opendaemonsocket: daemon MTA: cannot bind: Cannot assign requested
: address
: Mar 27 22:26:34 localhost sendmail[5348]: daemon MTA: problem
creating
: SMTP socket
: Mar 27 22:26:39 localhost sendmail[5348]: NOQUEUE: SYSERR(root):
: opendaemonsocket: daemon MTA: cannot bind: Cannot assign requested
: address
: Mar 27 22:26:39 localhost sendmail[5348]: daemon MTA: problem
creating
: SMTP socket
: Mar 27 22:26:44 localhost sendmail[5348]: NOQUEUE: SYSERR(root):
: opendaemonsocket: daemon MTA: cannot bind: Cannot assign requested
: address
: Mar 27 22:26:44 localhost sendmail[5348]: daemon MTA: problem
creating
: SMTP socket
: Mar 27 22:26:49 localhost sendmail[5348]: NOQUEUE: SYSERR(root):
: opendaemonsocket: daemon MTA: cannot bind: Cannot assign requested
: address
: Mar 27 22:26:49 localhost sendmail[5348]: daemon MTA: problem
creating
: SMTP socket
: Mar 27 22:26:54 localhost sendmail[5348]: NOQUEUE: SYSERR(root):
: opendaemonsocket: daemon MTA: cannot bind: Cannot assign requested
: address
: Mar 27 22:26:54 localhost sendmail[5348]: daemon MTA: problem
creating
: SMTP socket
: Mar 27 22:26:54 localhost sendmail[5348]: NOQUEUE: SYSERR(root):
: opendaemonsocket: daemon MTA: server SMTP socket wedged: exiting
:
: 이런 메시지만 남기구 자꾸 죽습니다.
: 왜이럴지..
: 고수님들의 많은 가르침 부탁드립니다.