Using setenvif in Apache to ignore entries in access_log
I use PRTG to monitor the status of my Zimbra installation by HTTP GET command every few minutes. This is causing the access log files to be approx 1MB/day.
I have looked around at the possibility of ignoring these specific GET commands in the access_log files. The only method I have found is by using the Apache SetEnvIf module, and getting Apache to load this module and then following the example shown here How To Tell Apache To Not Log Certain Requests In Its Access Log | HowtoForge - Linux Howtos and Tutorials
From what I can see the Apache supplied with Zimbra does not have this module installed, and I haven't been able to find a way to install it.
Has anyone else been able to install the mod_setenvif.so module and if so how?
Is there any other way to ignore the HTTP GET commands so they are not logged?
Thank you in advance,