我在 DirectAdmin 面板上收到此警告消息。什么是 CustomBuild version.txt，我不知道它的作用。怎样才能顺利更新。预先感谢您的回答。
A new message or response with subject:
CustomBuild versions.txt is getting old on lnx.example.com
has arrived for you to view.
Follow this link to view it:
example.com:2222/CMD_T..essage
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Automated Message Generated by DirectAdmin 1.61.5
Do Not Reply.