Life is too short to drink che...

 The Tuning performance of the server document found in IBM's Domino and Notes Information Center for Traveler 8.5.1 is misleading. I found this out the hard way after a server reboot yesterday. All of a sudden, my device users could not communicate with the server, their recipients were getting multiple copies of messages being sent from their devices, and the server log kept showing "Lotus Traveler task did not respond within the allotted time frame. Client request denied for user". I opened a PMR with IBM tech support and after sending them many log files, it was found that the setting for the servlet.properties file is not correct.

AS_REQUEST_TIME_LIMIT is correctly stated as being in seconds. However, ntstimeoutsyncas is in milliseconds, not seconds. Thus, the servlet is only waiting 230ms for the traveler process to respond. That is such a short period of time that you are going to see that timeout very, very often.
You should change ntstimeoutsyncas to be 230000 instead of 230 in servlets.properties.

After making the change and restarting the server, all is well again.