Sendmail

1

• Sendmail

2
?????????????? sendmail

• ??????????? MTA ? Unix
• ???????????? ?? 75 ???????? ????????
• ????? ????? ? ?????????
• ?????????? ????????? STARTTLS ? SASL
• ????????? UUCP ? ?????????? DECNET ? BITNET
• ????????? Milter ? ??????????? ??????????
• ???????? ?? ?????? 25 (smtp) ? 587 (submit)
• ???????????? ????? ???? ??????????? ????, ?
  ??????? ?? qmail ? postfix
• ??????? ????? ?????? ??? ? ????????????

3
???????? Open Relay
/etc/mail/local-host-names
???????????? ?????? ??? ?????, ??? ??????? ??????
?????? ????????? ?????
/etc/mail/relay-domains
???????????? ?????? ????????? ????. ?????
?????????? ??? ???????? ?????, ??? ? IP-??????,
?? ?????????? - IP-??????
/etc/mail/access
?????????????? ????? ??? ?????? ?????? ?????????
???? ? ????? ??????? sendmail.
4
sendmail.mc
... FEATURE(access_db)dnl FEATURE(blacklist_recip
ients')dnl ... define(confDEF_USER_ID',
mailmail')dnl define(confSMTP_LOGIN_MSG', Our
mailer')dnl define(confMAX_RCPTS_PER_MESSAGE',
300')dnl define(confMAX_MESSAGE_SIZE',
20000000')dnl define(confPRIVACY_FLAGS',
authwarnings,novrfy,noexpn,restrictqrun')dnl ...
5
sendmail SSL
?????????? ????? ????? ???????????? POP3
6
???????????? ??????
??????? ????????? sendmail
???? ??????
?????????? sendmail ????? ?????????????? ??
???????? ??????? ? ????????? ? ???????????
???????? - ???????? ????? ????? ?? ?????????
???? ??? ???????? ?? ??????? ??? - ???????? ?????
????? ?? ???????? ???? ?? ????????? ????????
????? - ??????????? Open Relay - ?????? ??
???????? ???? ????? ?????? ??? ??????? ?? SMTP -
????????? ??????? EXPN ? VRFY ????????? SMTP -
???? 587 ??????