我想测试使用普罗米修斯alertmanager通知通道通过grafana UI发送电子邮件警报。我在alertmanager的配置文件中添加的STMP细节。当我尝试测试它说，该邮件已发送，但没有真正发生。当我相同的电子邮件配置添加到grafana.ini文件，并添加用户界面中的电子邮件通知通道，我可以发送测试通知。我使用下面的图表掌舵进行安装 - > https://github.com/helm/charts/tree/master/stable/prometheus-operator这里是alertmanager配置文件。
config:
global:
resolve_timeout: 5m
smtp_smarthost: 'email-smtp.us-east-1.amazonaws.com:587'
smtp_from: 'redacted'
smtp_auth_username: 'redacted'
smtp_auth_password: 'redacted'
route:
group_by: ['job']
group_wait: 30s
group_interval: 5m
repeat_interval: 12h
receiver: 'null'
routes:
- match:
alertname: DeadMansSwitch
receiver: 'null'
receivers:
- name: 'null'
这是grafana日志。
t=2019-01-28T16:57:38+0000 lvl=info msg="Request Completed" logger=context userId=0 orgId=0 uname= method=GET path=/ status=302 remote_addr=127.0.0.1 time_ms=0 size=29 referer=
t=2019-01-28T16:59:07+0000 lvl=info msg="Request Completed" logger=context userId=1 orgId=1 uname=admin method=POST path=/api/alerts/test status=422 remote_addr=127.0.0.1 time_ms=36 size=82 referer="http://localhost:8000/d/6581e46e4e5c7ba40a07646395ef7b23/k8s-compute-resources-pod?refresh=10s&panelId=0&fullscreen&edit&orgId=1&tab=alert"
t=2019-01-28T16:59:56+0000 lvl=info msg="Request Completed" logger=context userId=1 orgId=1 uname=admin method=POST path=/api/alerts/test status=422 remote_addr=127.0.0.1 time_ms=37 size=82 referer="http://localhost:8000/d/a6e7d1362e1ddbb79db21d5bb40d7137/k8s-use-method-cluster?refresh=10s&panelId=0&fullscreen&edit&orgId=1&tab=alert"
t=2019-01-28T17:01:30+0000 lvl=info msg="Sending Alertmanager alert" logger=alerting.notifier.prometheus-alertmanager ruleId=0 notification=Alert
t=2019-01-28T17:02:30+0000 lvl=info msg="Sending Alertmanager alert" logger=alerting.notifier.prometheus-alertmanager ruleId=0 notification=Alert
t=2019-01-28T17:06:40+0000 lvl=info msg="Sending Alertmanager alert" logger=alerting.notifier.prometheus-alertmanager ruleId=0 notification=Alert
我在做什么错在这里？