I got following email from DirectAdmin server.
New Message: CustomBuild versions.txt is getting old on s1.serverok.in
A new message or response with subject:
CustomBuild versions.txt is getting old on s1.serverok.in
has arrived for you to view.
Follow this link to view it:
Automated Message Generated by DirectAdmin 1.52.1
Do Not Reply.
DirectAdmin is telling you to update your server.
You need to login to SSH as user root. Then run following commands.
./build all d