IPv6 PTR记录与gmail

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gmail-smtp-in.l.google.com[2607:f8b0:400d:c0f::1b] said: 550-5.7.1 [my IPv6] The IP address sending this message does not 550-5.7.1 have a PTR record setup. As a policy, Gmail does not accept messages 550-5.7.1 from IPs with missing PTR records.

看起来,我的邮件客户端神奇的使用了IPv6发送邮件,却没有设置PTR record。


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