- 목차
1. 설치방법
2. 서비스 체크
3. 서비스 등록
4. mailutils 설치
5. 메일 발송 테스트
6. 결과 확인
1. 설치 방법
apt update
apt install postfix
2. 서비스 체크
root@gbminnote:/var/log# systemctl status postfix
● postfix.service - Postfix Mail Transport Agent
Loaded: loaded (/lib/systemd/system/postfix.service; enabled; vendor preset: enabled)
Active: active (exited) since Sun 2023-04-23 20:53:38 KST; 30min ago
Docs: man:postfix(1)
Main PID: 2629 (code=exited, status=0/SUCCESS)
CPU: 1ms
Apr 23 20:53:38 gbminnote.com systemd[1]: Starting Postfix Mail Transport Agent...
Apr 23 20:53:38 gbminnote.com systemd[1]: Finished Postfix Mail Transport Agent.
root@gbminnote:~# ps -aux | grep master
root 2626 0.0 0.0 41328 5028 ? Ss 20:53 0:00 /usr/lib/postfix/sbin/master -w
root 2698 0.0 0.0 6476 2088 pts/0 S+ 20:54 0:00 grep --color=auto master
root@gbminnote:/var/log# netstat -nlp | grep 2626
tcp 0 0 0.0.0.0:25 0.0.0.0:* LISTEN 2626/master
tcp6 0 0 :::25 :::* LISTEN 2626/master
3. 서비스 등록
root@gbminnote:/var/log# systemctl status postfix
● postfix.service - Postfix Mail Transport Agent
Loaded: loaded (/lib/systemd/system/postfix.service; enabled; vendor preset: enabled)
Active: active (exited) since Sun 2023-04-23 20:53:38 KST; 31min ago
Docs: man:postfix(1)
Main PID: 2629 (code=exited, status=0/SUCCESS)
CPU: 1ms
Apr 23 20:53:38 gbminnote.com systemd[1]: Starting Postfix Mail Transport Agent...
Apr 23 20:53:38 gbminnote.com systemd[1]: Finished Postfix Mail Transport Agent.
4. mailutils 설치
root@gbminnote:~# apt install mailutils
5. 메일 발송 테스트
root@gbminnote:~# echo "postfix mail sending test" | mail -s "postfix mail sending test" gbminnote@gmail.com
6. 결과 확인 (정상발송)
root@gbminnote:~# tail -n 6 /var/log/mail.log
Apr 23 21:37:36 gbminnote postfix/pickup[2627]: D5C3B181D7F: uid=0 from=<root@gbminnote.com>
Apr 23 21:37:36 gbminnote postfix/cleanup[3411]: D5C3B181D7F: message-id=<20230423123736.D5C3B181D7F@gbminnote.com>
Apr 23 21:37:36 gbminnote postfix/qmgr[2628]: D5C3B181D7F: from=<root@gbminnote.com>, size=368, nrcpt=1 (queue active)
Apr 23 21:37:37 gbminnote postfix/smtp[3412]: connect to gmail-smtp-in.l.google.com[2404:6800:4008:c01::1a]:25: Network is unreachable
Apr 23 21:37:38 gbminnote postfix/smtp[3412]: D5C3B181D7F: to=<gbminnote@gmail.com>, relay=gmail-smtp-in.l.google.com[108.177.125.27]:25, delay=2, delays=0.01/0.01/1.3/0.66, dsn=2.0.0, status=sent (250 2.0.0 OK 1682253458 p11-20020a170902e74b00b001a1956e542dsi9489535plf.340 - gsmtp)
Apr 23 21:37:38 gbminnote postfix/qmgr[2628]: D5C3B181D7F: removed