我使用 google apps 从我的域名 prokubo.com 发送电子邮件，至少在发送到两个不同的域名时会返回电子邮件：
Delivery to the following recipient failed permanently:
[email protected]
Technical details of permanent failure:
Google tried to deliver your message, but it was rejected by the server for the recipient domain centralaccount.pt by mail-pt.securemail.pro . [81.88.48.101].
The error that the other server returned was:
550-Verification failed for <[email protected]>
550-Unrouteable address
550 Sender verify failed
并且
Delivery to the following recipient failed permanently:
[email protected]
Technical details of permanent failure:
Google tried to deliver your message, but it was rejected by the server for the recipient domain coworklisboa.pt by mx1.coworklisboa.pt . [81.88.48.104].
The error that the other server returned was:
550-Verification failed for <[email protected]>
550-Unrouteable address
550 Sender verify failed
我可以解决这个问题吗？我以前没有 spf 记录，现在我添加了它，但同样的事情一直发生 :(