You can read more about it here:
http://bit.ly/9dVjnP

Also please note that I don’t need to host multi-blogs for others so this was just for corporate manually enabled domains/hosts/sites.

Can you take a screenshot for me? Where do you see the error?

All new sites receive the error.

And your research is right, what really is of issue is what you want to do with the mapped domain:

Donncha’s Domain Mapping will map a domain but not create a series of subdomians on top of that domains as you can with the multi-site manager plugin.

As for the other two at WPMUTutorials, I can’t really say because I haven’t played too much with them.But given Andrea_r and Ron were behind them, I would have to think they do everything these two do and more. They have unbelievable programming chops and have been refining the plugins that are already out there. I’d love to hear about your experience.

I’m doing some research and there seam to be several good plugins that *probably* do the job:

1. WordPress MU Domain Mapping 0.4.3 (seems to work for 2.8.5) by Donncha O Caoimh
2. There are the “Simple Multi-Site plugin” and the “Advanced Domain Mapping plugin” as described in wpmututorials.com
3. The “Multi-Site Manager” at wpmudev.org

–On another topic – Multi-Domaining with Multi-Authors!–

In the past couple of months Multi-Domain has been working EXCELLENT! But one issue has arise…

Picture Mothership Mu as the master blog network, MM. Now, MM has 15 authors that actively blog on wp_1_, a few have their own sub domain blogs, some don’t. Several authors actively blog on Sub-Site-Mu’s, SSM’s.
 MothershipMu.com has 15 authors, 4 subdomains. SubSiteMu.com has 1 blog, zero subdomains. An issue arises… What if all 15 authors want to blog on SubSiteMu.com? How do you add 15 authors to SubSiteMu.com?

The only solution I’ve figured out is daunting. It involves sql knowledge.

The solution was to create a sql query, give users permissions to that specific blog/site.

Below,

————————————————

INSERT INTO `wp_usermeta` (`umeta_id`, `user_id`, `meta_key`, `meta_value`) VALUES
(708, 4, ‘wp_7_capabilities’, ‘a:1:{s:13:”administrator”;b:1;}’),
(709, 4, ‘wp_7_user_level’, ‘10′);

————————————————

Now, 15 authors x2 = 30 = a pain in the butt.

Say if you have SubSiteMu_1.com and SubSiteMu_2.com – 60 lines of code to edit. Painful enough?

Now, what if a few new author steps in? Start digging into the SQL!

We currently have one Mothership and 8 SubSiteMu’s… Luckily only two authors. We have another test site that has 23 authors and only a handful of SubSiteMu’s… Can you picture how complicated / redundant this troublesome issue could get?

Any suggestions?

Thanks in advance!

http://test.idevelopment-tech.com/wordpressmu/

Andrea is great, and if the Andrea and Ron team haven’t figured out a solution to this, I’m not sure if there is one