我的 MX 记录中可以同时拥有 Google Apps 和其他电子邮件服务吗？
我有一位客户要改用 Google Apps。我们已经设置了 Google Apps 帐户，但尚未添加 Google 的 MX 记录。我们将等待几周，然后才能真正将它们切换到 Google Apps 来发送邮件。
与此同时，Google 在看到 DNS 区域文件中的 MX 记录之前，不会真正激活 Google Apps 的电子邮件组件。我可以将当前的 MX 记录保留为高优先级 (0,10,20,30)，然后以较低的优先级 (110,120,130,140...) 添加 google apps MX 记录，以便 Google 进行验证，但实际上不会进行验证开始接收邮件，或者这会导致问题吗？我认为不会，因为只要主要电子邮件主机保持在线且可用并且不会因电子邮件而超载，记录就会被优先考虑。
I have a client who I'm switching to Google Apps. We've set up the Google Apps account but have not yet added Google's MX records. We're going to wait a few weeks before actually switching them over to Google Apps for mail.
In the meanwhile, Google won't actually activate the e-mail component of Google Apps until it can see the MX records in the DNS zone file. Can I keep the current MX records like they are, at a high priority (0,10,20,30) and then add the google apps MX records at a lower priority (110,120,130,140...) so that Google will verify but not actually start receiving mail, or will this cause problems? I'm assuming that it won't since the records are prioritized as long as the primary e-mail host stays online and available and does not get overloaded with e-mails.
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这很危险。如果您的主服务器不可用 - 即使只是一小会儿，无论出于何种原因 - 都会联系谷歌的服务器。如果他们返回“永久失败”错误，邮件将被退回。但是，如果您知道谷歌的邮件服务器将返回“暂时失败”（4xx）错误，那么您应该没问题。
This is dangerous. If your primary servers are unavailable - even for just a moment, and for any reason - google's servers will be contacted. If they return a 'permanent failure' error, the mail will bounce. If, however, you know that google's mail servers will return a 'temporary failure' (4xx) error, then you should be okay.