这里的任何人都有AWS EC2在Cpanel主机上配置SMTP的经验。
完成配置后,DKIM有效,SPF有效,但PTR无效(反向DNS)。然后,当我将测试电子邮件发送到mail-tester.com时,它是3/10。这是错误消息
We didn't find a server (A Record) behind your hostname ip-172-31-1-135.ap-southeast-1.compute.internal.
You may want to publish a DNS record (A type) for the hostname
ip-172-31-1-135.ap-southeast-1.compute.internal or use a different hostname in your mail software.
我是DNS新手,如果您需要更多信息,请给我评论。