ZCS Administrator Guide 7.2.1

Open Source Edition

Zimbra Proxy Components

Zimbra Proxy is designed to provide a proxy that is quick, reliable, and scalable. Zimbra Proxy includes the following:

Nginx. A high performance IMAP/POP3 proxy server which handles all incoming POP/IMAP requests.

Memcached. A high performance, distributed memory object caching system. Route information is cached for further use in order to increase performance.

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).