症状是发出去邮件以后就会收到一封 Mail Delivery Subsystem 由 [email protected] 发来的
The error that the other server returned was:
504 5.5.2 <pdir10>: Helo command rejected: need fully-qualified hostname
问了一下对方的邮件服务器管理员，说是
It appears your name server is not configured correctly.
Basically when a mail server tries to connect to us, it's supposed to say Helo and give its fully qualified host name (example - HELO mail.example.com.) Your mail server is only saying something like "HELO mail".
So you need to configure it to supply the fully qualified host name when it is attempting to connect.
但是尼玛 Google Apps 的服务器又不是我管理的。。。。所以想问一下这种情况大家遇到过吗？其他的企业邮箱是否能避免这个问题？收费的也可以。
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