● rabbitmq-server.service - RabbitMQ Messaging Server
   Loaded: loaded (/lib/systemd/system/rabbitmq-server.service; enabled; vendor preset: enabled)
   Active: failed (Result: timeout) since Wed 2018-03-21 19:44:18 UTC; 19min ago
  Process: 1100 ExecStartPost=/usr/lib/rabbitmq/bin/rabbitmq-server-wait (code=killed, signal=TERM)
  Process: 1099 ExecStart=/usr/sbin/rabbitmq-server (code=killed, signal=TERM)
 Main PID: 1099 (code=killed, signal=TERM)

Job for rabbitmq-server.service failed because a timeout was exceeded. See "systemctl status rabbitmq-server.service" and "journalctl -xe" for details.

Mar 21 20:07:48 server1 postfix/error[3719]: 280524B3A: to=<root@mydomain.com>, orig_to=<root>, relay=none, delay=101268, delays=101268/0/0/0, dsn=4.4.1, status=deferred (delivery temporarily suspende
Mar 21 20:07:48 server1 postfix/qmgr[1784]: 2D046FAC: from=<>, size=3126, nrcpt=1 (queue active)
Mar 21 20:07:48 server1 postfix/qmgr[1784]: 2D8AD474F: from=<root@mydomain.com>, size=751, nrcpt=1 (queue active)
Mar 21 20:07:48 server1 postfix/error[3712]: 2ED9D499A: to=<root@mydomain.com>, orig_to=<root>, relay=none, delay=155868, delays=155868/0/0/0, dsn=4.4.1, status=deferred (delivery temporarily suspende
Mar 21 20:07:48 server1 postfix/qmgr[1784]: 2EBCF3D40: from=<>, size=3128, nrcpt=1 (queue active)
Mar 21 20:07:48 server1 postfix/error[3706]: 2D8AD474F: to=<root@mydomain.com>, orig_to=<root>, relay=none, delay=38268, delays=38268/0/0/0, dsn=4.4.1, status=deferred (delivery temporarily suspended:
Mar 21 20:07:48 server1 postfix/error[3716]: 2D046FAC: to=<root@mydomain.com>, relay=none, delay=76240, delays=76240/0/0/0, dsn=4.4.1, status=deferred (delivery temporarily suspended: connect to porta
Mar 21 20:07:48 server1 postfix/qmgr[1784]: 2C9DE3945: from=<>, size=3134, nrcpt=1 (queue active)
Mar 21 20:07:48 server1 postfix/qmgr[1784]: 2AA2A48B3: from=<root@mydomain.com>, size=751, nrcpt=1 (queue active)
Mar 21 20:07:48 server1 postfix/error[3717]: 2C9DE3945: to=<root@mydomain.com>, relay=none, delay=399644, delays=399644/0/0/0, dsn=4.4.1, status=deferred (delivery temporarily suspended: connect to po
Mar 21 20:07:48 server1 postfix/error[3701]: 2EBCF3D40: to=<root@mydomain.com>, relay=none, delay=181242, delays=181242/0/0/0, dsn=4.4.1, status=deferred (delivery temporarily suspended: connect to po
Mar 21 20:07:48 server1 postfix/error[3712]: 2AA2A48B3: to=<root@mydomain.com>, orig_to=<root>, relay=none, delay=59268, delays=59268/0/0/0, dsn=4.4.1, status=deferred (delivery temporarily suspended: