What is Reddit's opinion of
Zimbra Collaboration Suite?
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➔ Zimbra Collaboration Suite website
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3 reviews of this app found across Reddit:
I've heard about, but have not use it:
https://www.zimbra.com/email-server-software/product-edition-comparison/
However you should really think about moving on-premise/self-hosted. Just looking at the mail storage requirements in my own environment is enough to scare me away from it.
I prefer G Suite to handle the nightmare for me...
Community Edition for Open Source no longer supports MS ActiveDirectory or other external LDAP. You have to use the built-in Zimbra LDAP. That or get paid Network Edition and authenticate in a variety of ways.
Product comparison document found here: https://www.zimbra.com/email-server-software/product-edition-comparison/
You have to pay for Zimbra to get the actual Exchange functionality, though.
https://www.zimbra.com/email-server-software/product-edition-comparison/
But otherwise yes, Zimbra is a feature-rich suite that makes setting up a mail server very easy!