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: 안녕하세요
: DNS 와 senmail 설정에 관해 몇가지 질문드리겠습니다
:
: 1. dns 설정시 zone 파일 안에
:
: &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;IN&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;MX&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<font color=red><b>0</b>
: </font>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;mail.xxx.com. <font color=red><b>@</b></font>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;IN&nbs
: p;&nbsp;&nbsp;&nbsp;&nbsp;NS&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;ns.xxx.com. <font color=red><b>@</b></font>&nbsp;&nbsp;&nbsp
: ;&nbsp;&nbsp;IN&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;A&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;xxx.xxx.xxx.xxx
: 이런식으로 있는데 MX 다음에 있는 숫자 "0" 과 NS 부분의 "@" 와 A 부분의
:  "@" 는 무엇인가요?
:
:
: 2. senmail 설정 파일중 access 파일 안에
:
: yahoo.co.kr&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;relay
: empas.com&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;ok
:
: 이렇게 있는데 "relay" 와 "ok" 의 차이는 무엇인가요?
:
: 읽어주신거 감사드리며 위 두가지 질문에 대한 답변을 부탁드릴께요
:
: 그럼 좋은 주말 보내시기바랍니다.
 ==>
The value part of the map can contain:
         OK              Accept mail even if other rules in the running
                        ruleset would reject it, for example, if the domain
                        name is unresolvable.  "Accept" does not mean
                        "relay", but at most acceptance for local
                        recipients.  That is, OK allows less than RELAY.
        RELAY           Accept mail addressed to the indicated domain or
                        received from the indicated domain for relaying
                        through your SMTP server.  RELAY also serves as
                        an implicit OK for the other checks.
        REJECT          Reject the sender or recipient with a general
                        purpose message.
        DISCARD         Discard the message completely using the
                        $#discard mailer.  If it is used in check_compat,
                        it affects only the designated recipient, not
                        the whole message as it does in all other cases.
                        This should only be used if really necessary.
        SKIP            This can only be used for host/domain names
                        and IP addresses/nets.  It will abort the current
                        search for this entry without accepting or rejecting
                        it but causing the default action.
        ### any text    where ### is an RFC 821 compliant error code and
                        "any text" is a message to return for the command.
                        The string should be quoted to avoid surprises,
                        e.g., sendmail may remove spaces otherwise.
                        This type is deprecated, use one the two
                        ERROR:  entries below instead.
        ERROR:### any text
                        as above, but useful to mark error messages as such.
        ERROR:D.S.N:### any text
                        where D.S.N is an RFC 1893 compliant error code
                        and the rest as above.
 For example:
         cyberspammer.com        ERROR:"550 We don't accept mail from spammers"
        okay.cyberspammer.com   OK
        sendmail.org            RELAY
        128.32                  RELAY
        IPv6:1:2:3:4:5:6:7      RELAY
        [127.0.0.3]             OK
        [IPv6:1:2:3:4:5:6:7:8]  OK
 바다사랑 드림
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