[exim] Strange signal terminating router

Anyone any thoughts about why my smtp router might be terminating with
signal 11 ??


smtp.sappsys.biz [81.29.69.161] status = usable
81.29.69.161 in serialize_hosts? no (option unset)
delivering 1EPNoF-0003AR-lL to smtp.sappsys.biz [81.29.69.161]
(andy@???)
set_process_info: 13876 delivering 1EPNoF-0003AR-lL to smtp.sappsys.biz
[81.29.69.161] (andy@???)
Connecting to smtp.sappsys.biz [81.29.69.161]:25 ... connected
waiting for data on socket
ok=0 send_quit=0 send_rset=1 continue_more=0 yield=1 first_address is not
NULL
LOG: MAIN
smtp.sappsys.biz [81.29.69.161]: Connection reset by peer
set_process_info: 13876 delivering 1EPNoF-0003AR-lL: just tried
smtp.sappsys.biz [81.29.69.161] for andy@???: result D
EFER
added retry item for T:smtp.sappsys.biz:81.29.69.161: errno=131
more_errno=0,M flags=2
all IP addresses skipped or deferred at least one address

post-process andy@??? (1)
LOG: MAIN
== andy@??? R=internet T=remote_smtp defer (-1): smtp transport
process returned non-zero status 0x000b: terminated
by signal 11
>>>>>>>>>>>>>>>> deliveries are done >>>>>>>>>>>>>>>>

LOG: MAIN
Frozen
delivery deferred: update_spool=1 header_rewritten=0


-Andy-