Pop mail worked fine for years. Then along came ZCS version 6, and it stopped working. I'm not the only one that can't upgrade from 5 to 6, looking at this bug report:
https://bugzilla.zimbra.com/show_bug.cgi?id=41213
This should be very easy to fix, no? Its a regression, something that used to work. What I wonder is who decides on the priority of what bugs get fixed?
Surely the highest priority bugs should be regression bugs, there's no point bringing out a new version if it stops people upgrading?
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v6 breaks pop, simple bug still not fixed 
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