zabbix通过本地搭建的postfix服务器向公司邮件服务器发信，频率一高就有下面的日志：
delivery temporarily suspended: lost connection with mail2.mailsever.com
host mail2.mailsever.com said: 450 too many connections from your IP (rate controlled) (in reply to RCPT TO command))如何控制postfix投递邮件的频率？如何不触发目标邮件服务器的频率控制规则？
监控报警，还是加下白名单吧
看下这个链接描述