ZCS Single Server Installation Guide 8.0
ZCS Single Server Installation Guide 8.0
Network Edition


Performing a ZCS Single Server Installation > Installing Zimbra Proxy package

Installing Zimbra Proxy package
The open source nginx proxy is bundled as part of the zimbra-proxy package, and this package can be installed on ZCS servers or on their own independent servers. When the zimbra-proxy package is installed, the proxy feature is enabled.
The Zimbra Proxy includes the following:
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Nginx. A high performance IMAP/POP3 proxy server which handles all incoming POP/IMAP requests.
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Memcached. This is a high performance, distributed memory object caching system contained in a separate package called zimbra-memcached. Route information is cached for further use in order to increase performance. There must be at least one memcached server installed for NGINX to function. It is not necessary for nginx and memcached to be on the same system, and you can have multiple nginx installations with only a single memcached installation.
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Zimbra Proxy Route Lookup Handler. This is a servlet located on the ZCS mailbox server. This servlet handles queries for the user account route information (the server and port number where the user account resides). When the proxy server is configured, the service ports on backend Zimbra mailbox servers are changed to alternate ports. The proxy now services the standard ports for these protocols. This change is applied even if the proxy services are run on their own independent hosts, in order to distinguish and avoid confusion between the services.
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