注册商之间的域名转移
当我们接管客户网站的管理时，我们经常会接管客户的域名。通常情况下，转移进展顺利。然而，有时我们在转移过程中会遇到 DNS 设置问题，因为转移涉及将 DNS 记录移至我们的注册商名称服务器。
在我们有机会通过我们的注册商管理域并在我们的注册商的域名服务器上设置 DNS 信息之前，传出注册商似乎正在从其域名服务器中删除 DNS 信息。这显然会导致用户几个小时（可能是几天）的停机时间。
我想知道是否还有其他人遇到过这个问题，以及是否有办法避免它。对于传出注册商需要在其域名服务器上保留 DNS 信息多长时间，是否存在某种指导原则？或者我们应该如何管理这个过程以避免出现这种停机情况。正如我所说，这种情况有时会发生 - 而且它似乎与 .com/.net/.org 域有关，但与 .uk 域无关（我们是一家英国公司）。
We frequently take over the domain names of our clients when we take over the management of their site. Normally the transfer progress goes fine. However sometimes we have issues with DNS settings during the transfer progress as the transfer involves moving the DNS records to our registrars nameservers.
It seems to be that the outgoing registrar is deleting the DNS info from their nameservers before we have a chance to manage the domain through our registrar and setup the DNS info on our registrar's nameservers. This obviously leads to a few hours (potentially a couple of days) of downtime for users.
I am wondering if anyone else ever has this problem and if there is a way to avoid it. Is there some kind of a guideline for how long the outgoing registrars needs to keep the DNS info on their nameservers? Or how should we manage this process to never have this downtime occur. As I said this only happens sometimes - and it alawys seems to be with with .com/.net/.org domains but not with .uk domains (we are a UK based company).
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我们在 .com 域上也遇到同样的问题。只有当您将旧提供商的域名和托管放在同一个包中时，才会发生这种情况，并且在转移域名时，托管也会与所有 DNS 记录一起被拒绝。并非所有提供商都这样做。
在订购域名转移之前，我会获取一个新的主机并更改 whois 中的 DNS，以确保新的主机正常工作。
在我们的例子中，旧的注册商不允许我们更改 whois，所以我们抓住了机会，但失败了。一旦混乱结束，我想我们就只能等待了。
We are having the same problem with a .com domain. It only seems to happen when you have domain and hosting in the old provider together in the same pack and when trasferring the domain the hosting is also turned down along with all DNS records. Not all providers behave that way.
I would get a new hosting and change DNS in the whois before ordering the domain transfer, being sure that the new hosting is working.
In our case the old registrar didn't allow us change the whois, so we took the chance and it failed. Once the mess is done, I suppose we can only wait.