后缀连续停止

Question

我只是在 unix.stackexchange.com 上问了这个问题，但没有得到任何答案。我希望至少在这里会很幸运。请忽略这个问题的愚蠢。我是 linux 的菜鸟。

我已成功将 Sendgrid 配置到 Google Cloud 实例中，该实例是安装在 CentOS 上的 CPanel。这里我已经做到了。

安装 Postfix 时，我必须删除当前安装的 exim4。安装成功，但我发现有时Postfix会停止。如果我再次开始使用# postfix start，它将在几分钟内停止。

以下是邮件日志：

# tail -n 30 /var/log/maillog

Jul 28 04:24:33 myhost postfix/qmgr[15174]: BAD9D110BEAB3: from=<root@myhost.localdomain>, size=3665, nrcpt=1 (queue active)
Jul 28 04:24:33 myhost postfix/smtp[15181]: BAD9D110BEAB3: to=<someperson@mycompany.com.au>, relay=smtp.sendgrid.net[167.89.125.25]:2525, delay=152, delays=152/0.02/0.1/0.03, dsn=2.0.0, status=sent (250 Ok: queued as q4j-M5JVRM61Sw9du237_g)
Jul 28 04:24:33 myhost postfix/qmgr[15174]: BAD9D110BEAB3: removed
Jul 28 04:24:33 myhost postfix/smtp[15177]: AA9A8110BEAA3: to=<someperson@mycompany.com.au>, relay=smtp.sendgrid.net[167.89.125.25]:2525, delay=577, delays=576/0.02/0.11/0.06, dsn=2.0.0, status=sent (250 Ok: queued as AcEHW3P5Q5K7PgnA0qvsYQ)
Jul 28 04:24:33 myhost postfix/qmgr[15174]: AA9A8110BEAA3: removed
Jul 28 04:24:33 myhost postfix/smtp[15180]: B5A5B110BEAB2: to=<someperson@mycompany.com.au>, relay=smtp.sendgrid.net[167.89.125.25]:2525, delay=152, delays=152/0.01/0.09/0.06, dsn=2.0.0, status=sent (250 Ok: queued as QumlXDnNQHekR3TnPfC_Kg)
Jul 28 04:24:33 myhost postfix/qmgr[15174]: B5A5B110BEAB2: removed
Jul 28 04:24:33 myhost postfix/smtp[15179]: B29A2110BEAA4: to=<someperson@mycompany.com.au>, relay=smtp.sendgrid.net[167.89.125.25]:2525, delay=577, delays=576/0.02/0.18/0.02, dsn=2.0.0, status=sent (250 Ok: queued as k-HSDlzjTPiR3mxxXWZj2A)
Jul 28 04:24:33 myhost postfix/qmgr[15174]: B29A2110BEAA4: removed
Jul 28 04:29:35 myhost spamc[15925]: connect to spamd on ::1 failed, retrying (#1 of 3): Connection refused
Jul 28 04:29:36 myhost spamd[1195]: zoom: able to use 996/997 'body_0' compiled rules (99.899%)
Jul 28 04:29:37 myhost spamd[1195]: spamd: server started on IO::Socket::INET [_]:783 (running version 3.4.1)
Jul 28 04:29:37 myhost spamd[1195]: spamd: server pid: 1195
Jul 28 04:29:37 myhost spamd[1195]: spamd: server successfully spawned child process, pid 15934
Jul 28 04:29:37 myhost spamd[1195]: prefork: child states: B
Jul 28 04:29:37 myhost spamd[15934]: spamd: connection from localhost [127.0.0.1]:39080 to port 783, fd 5
Jul 28 04:29:37 myhost spamd[1195]: spamd: server successfully spawned child process, pid 15935
Jul 28 04:29:37 myhost spamd[1195]: prefork: adjust: 0 idle children less than 1 minimum idle children. Increasing spamd children: 15935 started.
Jul 28 04:29:37 myhost spamd[1195]: prefork: child states: BI
Jul 28 04:29:37 myhost spamd[1195]: prefork: child states: II
Jul 28 04:29:37 myhost spamd[1195]: prefork: adjust: 2 idle children more than 1 maximum idle children. Decreasing spamd children: 15935 killed.
Jul 28 04:29:37 myhost spamd[1195]: prefork: child states: IK
Jul 28 04:29:37 myhost spamd[1195]: spamd: handled cleanup of child pid [15935] due to SIGCHLD: interrupted, signal 2 (0002)
Jul 28 04:29:37 myhost dovecot: pop3-login: Aborted login (no auth attempts in 0 secs): user=<>, rip=127.0.0.1, lip=127.0.0.1, secured, session=<6cb+IFlVIr1/AAAB>
Jul 28 04:29:38 myhost dovecot: lmtp(15985): Connect from local
Jul 28 04:29:38 myhost dovecot: lmtp(15985): Disconnect from local: Successful quit
Jul 28 04:29:38 myhost dovecot: imap-login: Login: user=<__cpanel__service__auth__imap__x4omw2slm18rtsvbmuqztk47y34ogk65i4b9jtgduyu1py...>, method=PLAIN, rip=127.0.0.1, lip=127.0.0.1, mpid=15998, secured, session=<lGoLIVlV9Ld/AAAB>
Jul 28 04:29:38 myhost dovecot: imap(__cpanel__service__auth__imap__x4omw2slm18rtsvbmuqztk47y34ogk65i4b9jtgduyu1pylltnu7jebtjldvddpu): Logged out in=11, out=470, bytes=11/470
Jul 28 04:29:38 myhost postfix/master[15172]: terminating on signal 15
Jul 28 04:29:40 myhost postfix/sendmail[16036]: fatal: Recipient addresses must be specified on the command line or via the -t option

我想知道这里发生了什么以及让 Postfix 持续运行的方法？

Answer 1

cPanel/WHM 是为与 exim4 而非 postfix 一起运行而开发的。没有后缀与 cPanel 的集成。您可以删除 exim 并安装 postfix，但您会遇到各种问题，例如电子邮件发送/接收、垃圾邮件过滤器等。如果您想从 cPanel 电子邮件功能中受益，我建议您删除 postfix 并继续使用 exim。作为基本准则，除非您真的知道自己在做什么，否则您必须按原样使用 cPanel。 WHM 中的电子邮件配置设置是为 exim 创建的。据我所知，postfix 集成在功能请求列表中，但尚未开发，并且没有实际信息是否会实施或何时实施：

https://features.cpanel.net/topic/postfix-support

所以删除后缀，尝试运行upcp --force 来强制更新 cPanel。通常它应该安装exim。如果没有，您可以使用 yum 包管理器手动安装它：

yum -y install exim-4.89-2.cp1162.x86_64（这将是 cPanel 和 WHM 64.0（build 36）上的最新稳定版本，在 CentOS 7.3 linux 发行版上运行）。或者，您可以运行：

yum -y install exim