We too get these warning-level errors caused by our sending HIS system which disconnects in between individual ADT messages; Our solution for viewing errors in the process .err log is to view the log using a simple 1-line script that filters out the extraneous message clutter:
cat *err | egrep -v ‘Connection reset by peer|remote side probably shut down’
-Glenn
Glenn Friedenreich
Christiana Care Health System
Wilmington, DE