[Exim] [Error in Mainlog when relaying mail][smtp transport …

Dear List

I ran exim in debug mode with the mesg id, and got the following error
in remote delivery session, any idea the reason for it and a solution
for it?

-------------------------------------------------------------------------
>>>>>>>>>>>>>>>> Remote deliveries >>>>>>>>>>>>>>>>
--------> linuxclassic@??? <--------
search_tidyup called
set_process_info: 19859 delivering 19NnMj-0005A5-6S: waiting for a
remote delivery subprocess to finish
selecting on subprocess pipes
changed uid/gid: remote delivery to linuxclassic@??? with
transport=remote_smtp
uid=1000 gid=1000 pid=19860
auxiliary group list: <none>
set_process_info: 19860 delivering 19NnMj-0005A5-6S using remote_smtp
remote_smtp transport entered
ganeshh@???
reading pipe for subprocess 19860 (not ended)
read() yielded 0
remote delivery process 19860 ended: status=000b
set_process_info: 19859 delivering 19NnMj-0005A5-6S
post-process linuxclassic@??? (1)
LOG: MAIN
== linuxclassic@??? R=dnslookup T=remote_smtp defer (-1):
smtp transport process returned non-zero status 0x000b: terminated by
signal 11

------------------------------------------------------------------------

Thanks in advance

Vibhav