I upgraded to the latest version of Smartermail 9735. The update seemed to go fine.

I did the upgrade last night, today I have at least one client reaching out that their outlook client sometime sends email and sometimes fails, it seemed to be intermittent. I have traced it to Brute force attempt by IP.  I went through the logs for the ip addresses that is getting blocked. last two days has been fine, after upgrade it is now getting blocked. Dose anyone know if anything changed regarding this security feature? My settings were logins before block: 20, timeframe:10 minutes. These have been the settings I have used for a long time.