Why are new directory users unable to login to iChat/jabberd?

I have a couple of new users I've added to our directory recently. They are unable to connect to our internal jabber (iChat) server. Users that have connected previously are experiencing no difficulty.

A quick overview of the layout of the system: two XServes, one is OD primary (aspen) the other is OD replica and iChat server (vail). I've modded some config files (long ago) to allow user IDs for jabber to be user@ourcompany.office instead of user@vail.ourcompany.office. It works quite nicely.

Excerpt from the logs shows a failed login attempt followed by a successful login attempt. Successful logins are happening from Messages (beta), iChat under Snow Leopard, and Pidgin under windows. Failing logins are all from iChat under Snow Leopard. Please ask questions, I'm happy to add any other pertinent data!

May 3 16:21:45 vail jabberd/c2s[99718]: [13] [::ffff:10.255.170.122, port=52584] connect

May 3 16:21:47 vail jabberd/c2s[99718]: [13] [::ffff:10.255.170.122, port=52584] disconnect jid=unbound, packets: 2

May 3 16:22:19 vail jabberd/c2s[99718]: [13] [::ffff:10.255.170.121, port=51608] connect

May 3 16:22:19 vail jabberd/c2s[99718]: od_auth_check_service_membership: checking user "jwells" access for service "chat"

May 3 16:22:19 vail jabberd/c2s[99718]: od_auth_check_service_membership: mbr_check_service_membership returned 2

May 3 16:22:19 vail jabberd/c2s[99718]: od_auth_check_service_membership: no access restrictions found

May 3 16:22:19 vail jabberd/c2s[99718]: [13] legacy authentication succeeded: host=ourcompany.office, username=jwells, resource=JWells’ Computer

May 3 16:22:19 vail jabberd/c2s[99718]: [13] requesting session: jid=jwells@ourcompany.office/JWells’ Computer

May 3 16:22:19 vail jabberd/sm[99716]: session started: jid=jwells@ourcompany.office/JWells’ Computer

Looking for any and all assistance. Thanks much!!