Samba AD DC Troubleshooting
Making pastebin easy
First thing, if you are asking for samba help, you may be asked for logs, configs, exact error messages, or a variety of other things. I use a program called pastebinit which can be installed on Ubuntu using apt-get install pastebinit.
I have setup a config in my users home directory called .pastebinit.xml and it contains the following:
<pastebinit> <pastebin>http://paste.ubuntu.com</pastebin> <author>IRC_Nick</author> <format>text</format> </pastebinit>
change IRC_Nick to your IRC nickname. You can find out more at  including other sites pastebinit works with.
After this is setup, if someone asks you for a config file, you can simply type pastebinit some.cfg and it will return a link the other use can use to see your pastebin. If you are trying to capture an error you may use something like samba-tool domain provision 2>&1 | pastebinit