Postfixは複数のプログラムが連携してメール配送を行っている. どんなプログラムが動作しているのか調べた. 環境はpostfix-2.10.1-7.el7.x86_64/CentOS Linux release 7.6
May 10, 2020 @pa_pa_paper
初期状態の起動プログラム(master, qmgr, tlsmgr, pickup)
root 28511 1 0 5月03 ? 00:00:06 /usr/libexec/postfix/master -w
postfix 16376 28511 0 5月07 ? 00:00:00 qmgr -l -t unix -u
postfix 18378 28511 0 5月07 ? 00:00:00 tlsmgr -l -t unix -u
postfix 8823 28511 0 15:11 ? 00:00:00 pickup -l -t unix -u
- master
- master(8), Postfix master daemon
- 全体制御用のデーモン
- qmgr
- qmgr(8), Postfix queue manager
- キュー内のメールを配送プログラムに渡す
- tlsmgr
- tlsmgr(8), Postfix TLS cache and randomness manager
- pickup
- pickup(8), Postfix local mail pickup
- maildropキューを監視し, 内部配送を処理
メール送信時の起動プログラム(smtpd, trivial-rewrite, cleanup, smtp)
root 28511 1 0 5月03 ? 00:00:06 /usr/libexec/postfix/master -w
postfix 16376 28511 0 5月07 ? 00:00:00 qmgr -l -t unix -u
postfix 18378 28511 0 5月07 ? 00:00:00 tlsmgr -l -t unix -u
postfix 8823 28511 0 15:11 ? 00:00:00 pickup -l -t unix -u
postfix 11579 28511 0 15:52 ? 00:00:00 smtpd -n smtp -t inet -u -o stress=
postfix 11581 28511 0 15:52 ? 00:00:00 trivial-rewrite -n rewrite -t unix -u
postfix 11582 28511 0 15:52 ? 00:00:00 cleanup -z -t unix -u
postfix 11584 28511 0 15:52 ? 00:00:00 smtp -t unix -u
- smtpd
- smtpd(8), Postfix SMTP server
- 外部配送を処理
- trivial-rewrite
- trivial-rewrite(8), Postfix address rewriting
- cleanup
- cleanup(8), canonicalize and enqueue message
- ヘッダ書換え等を行いincomingキューに入れ, qmgrに通知
- smtp
- smtp(8) Postfix SMTP client
postfix/smtpd[11579]: connect from localhost[127.0.0.1]
postfix/trivial-rewrite[11581]: warning: do not list domain xxxx.vs.sakura.ne.jp in BOTH mydestination and virtual_mailbox_domains
postfix/smtpd[11579]: 7EAD3695C: client=localhost[127.0.0.1]
postfix/cleanup[11582]: 7EAD3695C: message-id=<20200510065212.7EAD3695C@xxxx.vs.sakura.ne.jp>
postfix/qmgr[16376]: 7EAD3695C: from=<xxxx@xxxx.vs.sakura.ne.jp>, size=516, nrcpt=1 (queue active)
postfix/smtpd[11579]: disconnect from localhost[127.0.0.1]
postfix/smtp[11584]: 7EAD3695C: to=<xxxx@gmail.com>, relay=gmail-smtp-in.l.google.com[108.177.125.26]:25, delay=1.4, delays=0.02/0.02/0.62/0.73, dsn=2.0.0, status=sent (250 2.0.0 OK 1589093533 94si5287132plf.223 - gsmtp)
postfix/qmgr[16376]: 7EAD3695C: removed
メール受信時の起動プログラム(anvil, virtual)
root 28511 1 0 5月03 ? 00:00:06 /usr/libexec/postfix/master -w
postfix 16376 28511 0 5月07 ? 00:00:00 qmgr -l -t unix -u
postfix 18378 28511 0 5月07 ? 00:00:00 tlsmgr -l -t unix -u
postfix 8823 28511 0 15:11 ? 00:00:00 pickup -l -t unix -u
postfix 18941 28511 0 16:28 ? 00:00:00 smtpd -n smtp -t inet -u -o stress=
postfix 18942 28511 0 16:28 ? 00:00:00 anvil -l -t unix -u
postfix 18944 28511 0 16:28 ? 00:00:00 trivial-rewrite -n rewrite -t unix -u
postfix 18945 28511 0 16:28 ? 00:00:00 cleanup -z -t unix -u
postfix 18946 28511 0 16:28 ? 00:00:00 virtual -t unix
- anvil
- anvil(8), Postfix connection/rate limiting
- virtual
- virtual(8), Postfix virtual delivery agent
postfix/smtpd[18941]: connect from mail-io1-f41.google.com[209.85.166.41]
postfix/trivial-rewrite[18944]: warning: do not list domain xxxx.vs.sakura.ne.jp in BOTH mydestination and virtual_mailbox_domains
postfix/smtpd[18941]: B6C33A639: client=mail-io1-f41.google.com[209.85.166.41]
postfix/cleanup[18945]: B6C33A639: message-id=<CAH54enE=mRpxq3xMWmfpc5e=PEQs7NOAHJ5Tj0m8pW69RHjdGA@mail.gmail.com>
postfix/qmgr[16376]: B6C33A639: from=<xxxx@gmail.com>, size=3446, nrcpt=1 (queue active)
postfix/trivial-rewrite[18944]: warning: do not list domain xxxx.vs.sakura.ne.jp in BOTH mydestination and virtual_mailbox_domains
postfix/virtual[18946]: B6C33A639: to=<xxxx@xxxx.vs.sakura.ne.jp>, relay=virtual, delay=0.21, delays=0.16/0.02/0/0.03, dsn=2.0.0, status=sent (delivered to maildir)
postfix/qmgr[16376]: B6C33A639: removed