NBU-W-SOCKRST, cannot write to STDOUT - connection reset by peer

Hi All, 

I am getting the below error followed by which my backup getting failed

NBU Version -- 6.5.4 (All Master media Clients)

Client O.S Version :- OpenVMS

Server O.S Version :- SuSE Linux

_VERSION_RQST
06:00:02 [2395CACF] %NBU-I-VERSION, 06000000
06:00:02 [2395CACF] %NBU-I-REQUEST, BPCD_READ_USERS_CONFIG_RQST
06:00:02 [2395CACF] %NBU-I-CONFNUM, 1
06:00:02 [2395CACF] %NBU-I-NBUCONF, USEMAIL
06:00:02 [2395CACF] %NBU-I-NOTCONF, USEMAIL not configured
06:00:02 [2395CACF] %NBU-I-REQUEST, BPCD_GET_VERSION_RQST
06:00:02 [2395CACF] %NBU-I-VERSION, 06000000
06:00:02 [2395CACF] %NBU-I-REQUEST, BPCD_READ_HOST_CONFIG_RQST
06:00:02 [2395CACF] %NBU-I-CONFNUM, 1
06:00:02 [2395CACF] %NBU-I-NBUCONF, SERVER_SENDS_MAIL
06:00:02 [2395CACF] %NBU-I-NOTCONF, SERVER_SENDS_MAIL not configured
06:00:02 [2395CACF] %NBU-I-REQUEST, BPCD_DISCONNECT_RQST
06:00:02 [2395CACF] BPCD DISCONNECTED

[SYSTEM@ avms41]$

[SYSTEM@avms43]$ ty  SYS$SYSDEVICE:[OPENV.NETBACKUP.LOGS]LOG.20130909;1

06:15:34 [23E67840] %NBU-I-BACKSEL, DSA103:[000000...]*.*;*/RECORD/IGNORE=(INTERLOCK,NOBACKUP)
06:48:16 [23E67840] %NBU-W-SOCKRST, cannot write to STDOUT - connection reset by peer

Thanks,

Nayab