Sendmail 설정 (메일 발송)

sendmail 설정 #1 (메일 발송)
sendmail 메일발송

1 사전 작업[ | ]

sendmail 설치

2 sendmail.mc 수정[ | ]

[root@zetawiki ~]# cp /etc/mail/sendmail.mc /etc/mail/sendmail.mc.original
[root@zetawiki ~]# vi /etc/mail/sendmail.mc
[root@zetawiki ~]# diff /etc/mail/sendmail.mc.original /etc/mail/sendmail.mc

52,53c52,53
< dnl TRUST_AUTH_MECH(`EXTERNAL DIGEST-MD5 CRAM-MD5 LOGIN PLAIN')dnl
< dnl define(`confAUTH_MECHANISMS', `EXTERNAL GSSAPI DIGEST-MD5 CRAM-MD5 LOGIN PLAIN')dnl
---
> #TRUST_AUTH_MECH(`EXTERNAL DIGEST-MD5 CRAM-MD5 LOGIN PLAIN')dnl
> #define(`confAUTH_MECHANISMS', `EXTERNAL GSSAPI DIGEST-MD5 CRAM-MD5 LOGIN PLAIN')dnl

3 sendmail.cf 생성/보존[ | ]

[root@zetawiki ~]# m4 /etc/mail/sendmail.mc > /etc/mail/sendmail.cf
[root@zetawiki ~]# cp /etc/mail/sendmail.cf /etc/mail/sendmail.cf.original

4 서비스 재시작[ | ]

[root@zetawiki ~]# service sendmail restart
Shutting down sm-client:                                   [  OK  ]
Shutting down sendmail:                                    [  OK  ]
Starting sendmail:                                         [  OK  ]
Starting sm-client:                                        [  OK  ]

5 포트 확인[ | ]

[root@zetawiki ~]# netstat -anp | grep sendmail | grep LISTEN
tcp        0      0 127.0.0.1:25                0.0.0.0:*                   LISTEN      29403/sendmail

6 메일 발송 테스트 1[ | ]

[root@zetawiki ~]# telnet localhost 25
Trying ::1...
telnet: connect to address ::1: Connection refused
Trying 127.0.0.1...
Connected to localhost.
Escape character is '^]'.
220 zetawiki.com ESMTP Sendmail 8.14.4/8.14.4; Wed, 25 Feb 2015 11:22:53 +0900
mail from: root@zetawiki.com
250 2.1.0 root@zetawiki.com... Sender ok
rcpt to: seakyj2114@gmail.com
250 2.1.5 seakyj2114@gmail.com... Recipient ok
data
354 Enter mail, end with "." on a line by itself
hello, sendmail test.
.
250 2.0.0 t1P2MrX0029423 Message accepted for delivery
quit
221 2.0.0 zetawiki.com closing connection
Connection closed by foreign host.

[root@zetawiki ~]# cat /var/log/maillog | grep t1P2MrX0029423 
Dec 18 11:23:22 zetawiki sendmail[29423]: t1P2MrX0029423: Authentication-Warning: zetawiki: zetawiki.com [127.0.0.1] didn't use HELO protocol
Dec 18 11:23:43 zetawiki sendmail[29423]: t1P2MrX0029423: from=root@zetawiki.com, size=22, class=0, nrcpts=1, msgid=<201502250223.t1P2MrX0029423@zetawiki.com>, proto=SMTP, daemon=MTA, relay=zetawiki.com [127.0.0.1]
Dec 18 11:23:46 zetawiki sendmail[29429]: t1P2MrX0029423: to=seakyj2114@gmail.com, ctladdr=root@zetawiki.com (0/0), delay=00:00:11, xdelay=00:00:03, mailer=esmtp, pri=120022, relay=gmail-smtp-in.l.google.com. [74.125.204.27], dsn=2.0.0, stat=Sent (OK 1424831114 ir10si9135493pbc.62 - gsmtp)

← 정상 발송됨(Sent OK)

Gmail에서 확인해보니 메일이 잘 도착하였음

보낸 사람: root <root@zetawiki.com>

제목: (제목 없음)

내용: hello, sendmail test.

7 메일 발송 테스트 2[ | ]

[root@zetawiki ~]# echo 'this is test2.' | mail -s 'sendmail test2' 지메일계정@gmail.com

gmail에서 확인하니 메일이 잘 도착하였음

보낸사람: root <root@zetawiki>

제목: sendmail test2

본문: this is test2.

8 후속 작업[ | ]

9 같이 보기[ | ]

10 참고[ | ]