Hello
Seems ot be that you have any DNS issue, please be sure that exchange servers and DAG name if exist has been imported using FQDN name
Check with command omnidb -e2010 that databases are associated to FQDN name
C:\Users\administrator.EXCHGRE>omnidb -e2010
Object Name Object type
===============================================================================
dag1.exchgre.dag.com:/24f1752c-b964-4ad1-9732-431e0fe37210/DB1 E2010---------RIGHT
msl-dag:/081dccc9-0386-4a6a-893c-d009ff5f9134/10000-01 (A-M) E2010------------WRONG
Also check backup protection using omnidb -session sessionID -detail command
Best Regards