Local fixes and contributing upstream

[neutronscott]

I finally decided to work on fixing a list of issues I have at work, during my personal time, and have checked out the github repos.

Anyone doing this? Already having couple issues

1. I am a NETWORK user and am not sure if i should replace any binaries with FOSS compiled ones as I may lose functionality?

2. Zimbra/packages seems to have compiled openjdk 8 but the package installed from zimbra binaries is openjdk 13. So already I cannot trust the integrity of this repo.