Yes I'm login with an Exchange admin account with full access.
Job logs for review:
SET SNAP_ID=dag3.ex1.local_1397584527
EXCHGDATA 49 Microsoft Exchange Database Availability Groups:\ 268566596 16 130420581633100000 130420581633100000 130420581633100000 0 0 0
FILEBACKUP 113 0 C:\Program Files\Veritas\NetBackup\online_util\fi_cntl\bpfis.fim.dag3.ex1.local_1397584527.1.0.MEDAG.MetaData.txt
EXCHGDATA 53 Microsoft Exchange Database Availability Groups:\dag3 2752512 16 130420581633100000 130420581633100000 130420581633100000 0 0 0
FILEBACKUP 118 0 C:\Program Files\Veritas\NetBackup\online_util\fi_cntl\bpfis.fim.dag3.ex1.local_1397584527.1.0.MEDAG_DAG1.MetaData.txt
EXCHGDATA 29 Microsoft Information Store:\ 268566570 16 130420581633100000 130420581633100000 130420581633100000 0 0 0
FILEBACKUP 111 0 C:\Program Files\Veritas\NetBackup\online_util\fi_cntl\bpfis.fim.dag3.ex1.local_1397584527.1.0.MIS.MetaData.txt
EXCHGDATA 37 Microsoft Information Store:\nbu-db1\ 270532609 16 130420581640764014 130420581640764014 130420581640764014 0 0 0
FILEBACKUP 115 0 C:\Program Files\Veritas\NetBackup\online_util\fi_cntl\bpfis.fim.dag3.ex1.local_1397584527.1.0.MIS_SG1.MetaData.txt
SCC_DATA 46 Microsoft Information Store:\nbu-db1\User?Data
FILEBACKUP 117 0 C:\Program Files\Veritas\NetBackup\online_util\fi_cntl\bpfis.fim.dag3.ex1.local_1397584527.1.0.MIS_SG1UD.MetaData.txt
SCC_DATA 62 Microsoft Information Store:\nbu-db1\User?Data\Exchange Server
FILEBACKUP 120 0 C:\Program Files\Veritas\NetBackup\online_util\fi_cntl\bpfis.fim.dag3.ex1.local_1397584527.1.0.MIS_SG1UD_ES.MetaData.txt
SCC_DATA 88 Microsoft Information Store:\nbu-db1\User?Data\Exchange Server\Microsoft Exchange Server
FILEBACKUP 124 0 C:\Program Files\Veritas\NetBackup\online_util\fi_cntl\bpfis.fim.dag3.ex1.local_1397584527.1.0.MIS_SG1UD_ES_MES.MetaData.txt
SCC_DATA 116 Microsoft Information Store:\nbu-db1\User?Data\Exchange Server\Microsoft Exchange Server\Microsoft Information Store
FILEBACKUP 128 0 C:\Program Files\Veritas\NetBackup\online_util\fi_cntl\bpfis.fim.dag3.ex1.local_1397584527.1.0.MIS_SG1UD_ES_MES_MIS.MetaData.txt
SCC_DATA 124 Microsoft Information Store:\nbu-db1\User?Data\Exchange Server\Microsoft Exchange Server\Microsoft Information Store\Replica
FILEBACKUP 136 0 C:\Program Files\Veritas\NetBackup\online_util\fi_cntl\bpfis.fim.dag3.ex1.local_1397584527.1.0.MIS_SG1UD_ES_MES_MIS_Replica.MetaData.txt
SCC_DATA 137 Microsoft Information Store:\nbu-db1\User?Data\Exchange Server\Microsoft Exchange Server\Microsoft Information Store\Replica\WS12-MBXCAS6
FILEBACKUP 149 0 C:\Program Files\Veritas\NetBackup\online_util\fi_cntl\bpfis.fim.dag3.ex1.local_1397584527.1.0.MIS_SG1UD_ES_MES_MIS_Replica_WS12_MBXCAS6.MetaData.txt
SCC_DATA 145 Microsoft Information Store:\nbu-db1\User?Data\Exchange Server\Microsoft Exchange Server\Microsoft Information Store\Replica\WS12-MBXCAS6\nbu-db1
FILEBACKUP 157 0 C:\Program Files\Veritas\NetBackup\online_util\fi_cntl\bpfis.fim.dag3.ex1.local_1397584527.1.0.MIS_SG1UD_ES_MES_MIS_Replica_WS12_MBXCAS6_nbu_db1.MetaData.txt
EXCHGDATA 46 Microsoft Information Store:\nbu-db1\Database\ 2097154 128 130420581645135484 130420581640000000 130420581640000000 142706656 0
FILEBACKUP 124 0 C:\Program Files\Veritas\NetBackup\online_util\fi_cntl\bpfis.fim.dag3.ex1.local_1397584527.1.0.MIS_SG1_Database.MetaData.txt
BACKUP e:\nbu-db1\nbu-db1.edb USING /Microsoft Information Store/nbu-db1/Database//\\?/GLOBALROOT/Device/HarddiskVolumeShadowCopy7/nbu-db1/nbu-db1.edb OPTIONS:ALT_PATH_PREFIX=C:\Program Files\Veritas\NetBackup\temp\_vrts_frzn_img_13548_1,GRT_LINK=1,METADATA=C:\Program Files\Veritas\NetBackup\online_util\fi_cntl\bpfis.fim.dag3.ex1.local_1397584527.1.0.MIS_SG1_Database_nbu-db1.edb.MetaData.txt
EXCHGDATA 53 Microsoft Information Store:\nbu-db1\Logs_1397584527\ 2097154 128 130420581646541761 130420581640000000 130420581640000000 110161396 0
FILEBACKUP 120 0 C:\Program Files\Veritas\NetBackup\online_util\fi_cntl\bpfis.fim.dag3.ex1.local_1397584527.1.0.MIS_SG1_Logs.MetaData.txt
LOGS_BACKUP e:\nbu-log1\E0100000001.log USING /Microsoft Information Store/nbu-db1/Logs_1397584527//\\?/GLOBALROOT/Device/HarddiskVolumeShadowCopy7/nbu-log1/E0100000001.log OPTIONS:ALT_PATH_PREFIX=C:\Program Files\Veritas\NetBackup\temp\_vrts_frzn_img_13548_1,GRT_LINK=0,METADATA=C:\Program Files\Veritas\NetBackup\online_util\fi_cntl\bpfis.fim.dag3.ex1.local_1397584527.1.0.MIS_SG1_Logs_E0100000001.log.MetaData.txt,LOG_COUNT=1
LOGS_BACKUP e:\nbu-log1\E0100000002.log USING /Microsoft Information Store/nbu-db1/Logs_1397584527//\\?/GLOBALROOT/Device/HarddiskVolumeShadowCopy7/nbu-log1/E0100000002.log OPTIONS:ALT_PATH_PREFIX=C:\Program Files\Veritas\NetBackup\temp\_vrts_frzn_img_13548_1,GRT_LINK=1,METADATA=C:\Program Files\Veritas\NetBackup\online_util\fi_cntl\bpfis.fim.dag3.ex1.local_1397584527.1.0.MIS_SG1_Logs_E0100000002.log.MetaData.txt,LOG_COUNT=104
BACKUP e:\nbu-log1\E01tmp.log USING /Microsoft Information Store/nbu-db1/Logs_1397584527//\\?/GLOBALROOT/Device/HarddiskVolumeShadowCopy7/nbu-log1/E01tmp.log OPTIONS:ALT_PATH_PREFIX=C:\Program Files\Veritas\NetBackup\temp\_vrts_frzn_img_13548_1,GRT_LINK=1,METADATA=C:\Program Files\Veritas\NetBackup\online_util\fi_cntl\bpfis.fim.dag3.ex1.local_1397584527.1.0.MIS_SG1_Logs_E01tmp.log.MetaData.txt
BACKUP e:\nbu-log1\E01.chk USING /Microsoft Information Store/nbu-db1/Logs_1397584527//\\?/GLOBALROOT/Device/HarddiskVolumeShadowCopy7/nbu-log1/E01.chk OPTIONS:ALT_PATH_PREFIX=C:\Program Files\Veritas\NetBackup\temp\_vrts_frzn_img_13548_1,GRT_LINK=1,METADATA=C:\Program Files\Veritas\NetBackup\online_util\fi_cntl\bpfis.fim.dag3.ex1.local_1397584527.1.0.MIS_SG1_Logs_E01.chk.MetaData.txt
4/15/2014 10:56:06 AM - Info bpbrm(pid=2940) WS12-MBXCAS6.EX1.LOCAL is the host to backup data from
4/15/2014 10:56:06 AM - Info bpbrm(pid=2940) reading file list for client
4/15/2014 10:56:06 AM - Info nbjm(pid=2528) starting backup job (jobid=140) for client WS12-MBXCAS6.EX1.LOCAL, policy ex13-dag3, schedule dag3-full
4/15/2014 10:56:06 AM - estimated 0 Kbytes needed
4/15/2014 10:56:06 AM - Info nbjm(pid=2528) started backup (backupid=dag3.ex1.local_1397584566) job for client WS12-MBXCAS6.EX1.LOCAL, policy ex13-dag3, schedule dag3-full on storage unit nbu1-disk
4/15/2014 10:56:06 AM - started process bpbrm (2940)
4/15/2014 10:56:07 AM - Info bpbrm(pid=2940) starting bpbkar32 on client
4/15/2014 10:56:07 AM - connecting
4/15/2014 10:56:07 AM - connected; connect time: 0:00:00
4/15/2014 10:56:31 AM - Info bpbkar32(pid=13876) Backup started
4/15/2014 10:56:31 AM - Info bpbkar32(pid=13876) change time comparison:<disabled>
4/15/2014 10:56:31 AM - Info bpbkar32(pid=13876) archive bit processing:<enabled>
4/15/2014 10:56:31 AM - Info bptm(pid=1512) start
4/15/2014 10:56:31 AM - Info bptm(pid=1512) using 262144 data buffer size
4/15/2014 10:56:31 AM - Info bptm(pid=1512) setting receive network buffer to 1049600 bytes
4/15/2014 10:56:31 AM - Info bptm(pid=1512) using 30 data buffers
4/15/2014 10:56:31 AM - Info bptm(pid=1512) start backup
4/15/2014 10:56:31 AM - Info bptm(pid=1512) backup child process is pid 1884.5080
4/15/2014 10:56:31 AM - Info bptm(pid=1884) start
4/15/2014 10:56:31 AM - begin writing
4/15/2014 10:56:33 AM - Info bpbrm(pid=2940) DB_BACKUP_STATUS is 0
4/15/2014 10:56:33 AM - Info bptm(pid=1512) waited for full buffer 66 times, delayed 93 times
4/15/2014 10:56:33 AM - Info bptm(pid=1512) EXITING with status 0 <----------
4/15/2014 10:56:33 AM - Info bpbrm(pid=2940) validating image for client dag3.ex1.local
4/15/2014 10:56:34 AM - Info bpbkar32(pid=13876) done. status: 0: the requested operation was successfully completed
4/15/2014 10:56:34 AM - end writing; write time: 0:00:03
the requested operation was successfully completed(0)