我刚刚在我的linux操作系统上安装了sendmail。
我似乎无法接收电子邮件，这就是我在日志中看到的内容：
Aug 10 14:12:10 localhost sendmail[13316]: v7A9CAPC013316: from=root, size=238, class=0, nrcpts=1, msgid=<201708100912.v7A9CAPC013316@localhost.test>, relay=root@localhost
Aug 10 14:12:10 localhost sendmail[13317]: v7A9CAwD013317: from=<root@localhost.test>, size=484, class=0, nrcpts=1, msgid=<201708100912.v7A9CAPC013316@localhost.test>, proto=ESMTP, daemon=MTA, relay=localhost [127.0.0.1]
Aug 10 14:12:10 localhost sendmail[13316]: v7A9CAPC013316: to=sandeelo.danyal@gmail.com, ctladdr=root (0/0), delay=00:00:00, xdelay=00:00:00, mailer=relay, pri=30238, relay=[127.0.0.1] [127.0.0.1], dsn=2.0.0, stat=Sent (v7A9CAwD013317 Message accepted for delivery)
Aug 10 14:12:12 localhost sendmail[13319]: STARTTLS=client, relay=gmail-smtp-in.l.google.com., version=TLSv1/SSLv3, verify=FAIL, cipher=ECDHE-RSA-AES128-GCM-SHA256, bits=128/128
Aug 10 14:12:13 localhost sendmail[13319]: v7A9CAwD013317: to=<sandeelo.danyal@gmail.com>, ctladdr=<root@localhost.test> (0/0), delay=00:00:03, xdelay=00:00:03, mailer=esmtp, pri=120484, relay=gmail-smtp-in.l.google.com. [74.125.133.26], dsn=5.0.0, stat=Service unavailable
Aug 10 14:12:13 localhost sendmail[13319]: v7A9CAwD013317: v7A9CDwD013319: DSN: Service unavailable
Aug 10 14:12:13 localhost sendmail[13319]: v7A9CDwD013319: to=<root@localhost.test>, delay=00:00:00, xdelay=00:00:00, mailer=local, pri=31714, dsn=2.0.0, stat=Sent