```
Jun 26 15:33:11 instance-4 sendmail[24051]: v5PEWAbc005750: to=<2392507255@qq.com>, ctladdr=<www@instance-4.c.thermal-yeti-162901.internal> (502/503), delay=17:01:01, xdelay=00:16:00, mailer=esmtp, pri=1501953, relay=
mx1.qq.com. [183.57.48.35], dsn=4.0.0, stat=Deferred: Connection timed out with
mx1.qq.com.
Jun 26 15:33:11 instance-4 sendmail[24051]: v5PCRk9k003817: to=<2392507255@qq.com>, ctladdr=<www@instance-4.c.thermal-yeti-162901.internal> (502/503), delay=19:05:25, xdelay=00:00:00, mailer=esmtp, pri=1772051, relay=
mx1.qq.com., dsn=4.0.0, stat=Deferred: Connection timed out with
mx1.qq.com.
Jun 26 15:33:11 instance-4 sendmail[24051]: v5PCRkCk003813: to=<2392507255@qq.com>, ctladdr=<www@instance-4.c.thermal-yeti-162901.internal> (502/503), delay=19:05:25, xdelay=00:00:00, mailer=esmtp, pri=1839169, relay=
mx1.qq.com., dsn=4.0.0, stat=Deferred: Connection timed out with
mx1.qq.com.
Jun 26 15:33:11 instance-4 sendmail[24051]: v5PCwxA3004320: to=<2392507255@qq.com>, ctladdr=<www@instance-4.c.thermal-yeti-162901.internal> (502/503), delay=18:34:12, xdelay=00:00:00, mailer=esmtp, pri=1839783, relay=
mx1.qq.com., dsn=4.0.0, stat=Deferred: Connection timed out with
mx1.qq.com.
Jun 26 15:33:11 instance-4 sendmail[24051]: v5PCRlaj003825: to=<2392507255@qq.com>, ctladdr=<www@instance-4.c.thermal-yeti-162901.internal> (502/503), delay=19:05:24, xdelay=00:00:00, mailer=esmtp, pri=1839983, relay=
mx1.qq.com., dsn=4.0.0, stat=Deferred: Connection timed out with
mx1.qq.com.
```