APM + Active Directory Trusts

have tried split domain from username and cross domain support and various combinations thereof. Ended up with all kinds of strange combinations in the logs like:

I think the results were something like the following.....

Split Domain From UserName Enabled / Cross Domain Support Disabled:

2013-11-14 19:47:53 Username 'child\user2' Common 2013-11-14 19:47:53 AD module: authentication with '' failed: Client 'user2@domain.com' not found in Kerberos database, principal name: user2 2013-11-14 19:47:53 Following rule 'fallback' from item 'AD Auth' to ending 'Deny'

2013-11-14 19:48:13 Username 'user2@child.domain.com' Common 2013-11-14 19:48:13 AD module: authentication with '' failed: Client 'user2@domain.com' not found in Kerberos database, principal name: user2 2013-11-14 19:48:13 Following rule 'fallback' from item 'AD Auth' to ending 'Deny'

Split Domain From UserName Enabled / Cross Domain Support Enabled:

2013-11-14 20:03:25 Username 'child\user2' Common 2013-11-14 20:03:56 Username 'user2' Common 2013-11-14 20:03:56 Retry Username 'user2' Common 2013-11-14 20:09:15 \N: Session deleted due to user inactivity or errors.

2013-11-14 20:04:34 Username 'child\user2' Common 2013-11-14 20:04:49 \N: Session deleted due to admin initiated termination. Common 2013-11-14 20:04:49 Following rule 'fallback' from item 'AD Auth' to ending 'Deny'

2013-11-14 20:31:12 Username 'user2@child.domain.com' Common 2013-11-14 20:32:42 Username 'user2@child.domain.com' Common 2013-11-14 20:32:42 Retry Username 'user2' Common 2013-11-14 20:38:05 \N: Session deleted due to user inactivity or errors.

Split Domain From UserName Disabled / Cross Domain Support Enabled:

2013-11-14 20:34:36 Username 'child\user2' Common 2013-11-14 20:34:36 AD module: authentication with 'child\user2@domain.com' failed: Client 'child\user2\@domain.com@domain.com' not found in Kerberos database, principal name: child\user2@domain.com@domain.com. Please verify Active Directory and DNS configuration. (-1765328378) Common

2013-11-14 20:34:50 Username 'user2@child.domain.com' Common 2013-11-14 20:34:50 Retry Username 'user2@child.domain.com' Common 2013-11-14 20:34:51 AD module: authentication with 'user2\@child.domain.com@domain.com' failed: Client 'user2\@child.airmis.airwave

Basically I just want the user to be able to stipulate the domain and for APM to forward that to the DC.

Seems that in the APM AD config because you have entered the FQFN of 'domain.com' it doesn't understand there may be child domains/trusts.....