Migration Zimbra 6.0.16 to 8.0.6

Good morning,

After installing zextras checked at the end he says that there may be problem with the administration interface zimbra with ajax:

ZeXtras Suite and the Zimbra DoSFilter

I checked the link in the message it sends to adjust some values​​:

zimbraHttpDosFilterMaxRequestsPerSec
zimbraHttpDosFilterDelayMillis
zimbraHttpThrottleSafeIPs

I wonder what would be an acceptable value, since I'm trying to do a migration from a Zimbra server 6.0.16 to 8.0.6, I have accounts in 1200, divided into 4 domains, a total of 900 GB of email.

What would the command line to set these values​​.