在测试grafana邮箱报警功能的时候出现Failed to send alert notifications
查询grafana日志文件如下
tail -f -n 300 /var/log/grafana/grafana.log
t=2021-07-27T17:39:16+0800 lvl=eror msg="Failed to send alert notification email" logger=alerting.notifier.email error="Failed to send notification to email addresses: alisa190825@sina.com: gomail: could not send email 1: 452 Too many recipients received this hour. p=ca1-452 113.111.140.230 " t=2021-07-27T17:39:16+0800 lvl=eror msg="failed to send notification" logger=alerting.notifier uid= error="Failed to send notification to email addresses: alisa190825@sina.com: gomail: could not send email 1: 452 Too many recipients received this hour. p=ca1-452 113.111.140.230 "
通过日志查出当前监控的一台mysql故障，grafana不断向目标邮箱发送邮件从而占用过多请求。
could not send email 1: 452 Too many recipients received this hour
经处理完mysql服务器恢复正常，再进行测试正常。
Grafana 邮箱报警测试之Failed to send alert notifications问题解决
原文：https://www.cnblogs.com/alisapine/p/15067279.html