we had an issue with our exchange infrastructure on LTM 11.6.2 with the "request logging" feature enabled. It stopped passing all exchange client traffic. It happened a little while after the syslog server went offline. When the "request logging" was disabled the traffic started passing normally.
But we are running a newer code that has the bug fix. So we are not sure what is the issue. IS there a local buffer margin for which it waits for and after it is full the traffic is stopped. Is there a mechanism to avoid this disruption?