Enabling Zimbra Proxy and memcached

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Article Information

This article applies to the following ZCS versions.

ZCS 5.0 Article ZCS 5.0 ZCS 6.0 Article ZCS 6.0

ZCS Versions

This document is applicable to ZCS 5.0.x only. In ZCS 6.0, the zmproxyinit command has been changed to zmproxyconfig. The steps outlined in this article are specific to the zmproxyinit command, and may not be applicable to zmproxyconfig.


Simple Command With Defaults

The zmproxyinit command can be run with limited arguments if the command defaults are acceptable. Run zmproxyinit without arguments to view the defaults.

Preparing Proxy Hosts

Log into each proxy server hosts and run as user zimbra

  • Enable (-e) IMAP/POP3 mail (-m) and HTTP (-w) in both HTTP and HTTPS (-x) mode for host (-H) returned by the zmhostname command
/opt/zimbra/libexec/./zmproxyinit -m -w -e -x both -H `zmhostname`


  • Enable IMAP/POP3 proxy only without HTTP
/opt/zimbra/libexec/./zmproxyinit -m -e -H `zmhostname`


  • Enable HTTP proxy only without IMAP/POP3 in both mode
/opt/zimbra/libexec/./zmproxyinit -w -e -x both -H `zmhostname`

Note: the zmproxyinit command can be run more than once with the (-e) flag to enable proxy services. It is common, for example, to enable HTTP proxy after having used proxy for IMAP/POP3 services.

Preparing Mailbox Server Hosts

Log into each mailbox server host and run as user zimbra

/opt/zimbra/libexec/./zmproxyinit -m -w -e -H `zmhostname`

** STOP ** here if the simple commands are used.


When using zmproxyinit to enable HTTP proxy, -w is used to indicate web proxy and -a is used to specify a colon separated list of web ports in format HTTP-STORE:HTTP-PROXY:HTTPS-STORE:HTTPS-PROXY. Note these port designations only specify listener ports for the server specified with -H, therefore, use a value of "0" (disabled) to avoid port conflict errors.

Preparing Proxy Hosts

Enable the proxy host to listen on ports 80 and 443. Login to each host running zimbra-proxy and run

/opt/zimbra/libexec/./zmproxyinit -w -e -a 0:80:0:443 -x both -H `zmhostname`

HTTP-PROXY and HTTPS-PROXY ports are set to indicate listener ports for the HTTP proxy host. HTTP-STORE and HTTPS-STORE designations are 0 (disabled) since they apply only to mailbox server configurations and this is a proxy only host.

Preparing Mailstore Hosts

Login to each host running zimbra-mailbox and run

/opt/zimbra/libexec/./zmproxyinit -w -e -a 8080:0:8443:0 -H `zmhostname`

HTTP-STORE and HTTPS-STORE ports of 8080 and 8443 are set to indicate listener ports for the mailbox server host. HTTP-PROXY and HTTPS-PROXY designations are 0 (disabled) since they apply only to proxy server configurations and this is a mailbox only host.

Alternatively, mailbox servers can listen on ports 80 and 443 without conflict to the proxy or other service. Just specify the desired listener ports with zmproxyinit's -a flag

/opt/zimbra/libexec/./zmproxyinit -w -e -a 80:0:443:0 -H `zmhostname

Protocol Requirements Including HTTPS Redirect

HTTP proxy can support protocol modes for HTTP or HTTPS only, both HTTP and HTTPS, mixed HTTP and HTTPS or HTTPS redirect from HTTP. Redirect is a popular configuration. This configuration must be made to the proxy servers.

  • HTTPS redirect from HTTP
zmprov ms proxy.server.name zimbraReverseProxyMailMode redirect
  • HTTP and HTTPS (support both)
zmprov ms proxy.server.name zimbraReverseProxyMailMode both
  • HTTPS only
zmprov ms proxy.server.name zimbraReverseProxyMailMode https
  • HTTP only
zmprov ms proxy.server.name zimbraReverseProxyMailMode http
  • "mixed" will cause only authentication to be sent over HTTPS
zmprov ms proxy.server.name zimbraReverseProxyMailMode mixed

Documents & Sharing

It is important to consider access to documents (Briefcase) and shares when setting up HTTP proxy. A publicly reachable address must be configured to be used for the REST and SOAP proxy interfaces otherwise components requiring access to these interfaces will fail. Calendar sharing is an example of one component. Set zimbraPublicServiceHostname, zimbraPublicServiceProtocol, and zimbraPublicServicePort when applicable. These values are usually not required without proxy since the REST and SOAP proxy interfaces take the value of the Zimbra mailbox service hostname by default. These attributes can be set globally to be inherited by all domains or per domain.

Set zimbraPublicServiceHostname to the value of the host that will be used in the URL for access to the HTTP proxy.

  • This command sets mail.domain.com as the public hostname to be used for access to all domains in the Zimbra directory:
zmprov mcf zimbraPublicServiceHostname mail.domain.com
  • This command sets mail.domaina.com as the public hostname to be used for access to domaina.com domain:
zmprov md domaina.com zimbraPublicServiceHostname mail.domaina.com
  • Set zimbraPublicServiceProtocol to http or https depending on the protocol requirements for HTTP proxy:
zmprov md domaina.com zimbraPublicServiceProtocol https
  • Set zimbraPublicServicePort to the value that corresponds to the HTTP proxy port used in the URL (optional if standard ports 80 or 443 are used for proxy listeners):
zmprov md domaina.com zimbraPublicServicePort 443


Preparing Proxy Hosts

  • IMAP
/opt/zimbra/libexec/./zmproxyinit -m -e -i 0:143:0:993 -H `zmhostname`
  • POP3
/opt/zimbra/libexec/./zmproxyinit -m -e -p 0:110:0:995 -H `zmhostname`
  • POP3 and IMAP in a single command
 /opt/zimbra/libexec/./zmproxyinit -m -e -p 110:0:995:0 -i 143:0:993:0 -H `zmhostname`

Preparing Mailstore Hosts

  • IMAP
/opt/zimbra/libexec/./zmproxyinit -m -e -i 7143:143:7993:993 -H `zmhostname`
  • POP3
/opt/zimbra/libexec/./zmproxyinit -m -e -p 7110:110:7995:995 -H `zmhostname`
  • POP3 and IMAP in a single command
/opt/zimbra/libexec/./zmproxyinit -m -e -p 110:0:995:0 -i 143:0:993:0 -H `zmhostname`

Single Node

Other Considerations


Domain Virtual Hosts


Proxy Login Slow

A common nginx misconfiguration is to have incorrectly designated non-mailbox servers as routing handlers. Only mailbox servers can perform route handler functions. To view the route lookup handlers, review the zmroutehandlers parameter in /opt/zimbra/conf/nginx/includes/nginx.conf.web.

grep zmroutehandlers /opt/zimbra/conf/nginx/includes/nginx.conf.web

If a non-mailbox server is listed, set the zimbraReverseProxyLookupTarget server configuration attribute to FALSE for that server.

zmprov ms `zmhostname` zimbraReverseProxyLookupTarget FALSE

Additionally, zimbraReverseProxyLookupTarget is a server inherited attribute from the global configuration, so check if zimbraReverseProxyLookupTarget has been incorrectly designated in global config.

zmprov gcf zimbraReverseProxyLookupTarget
Verified Against: Date Created: 2/07/2009
Article ID: https://wiki.zimbra.com/index.php?title=Enabling_Zimbra_Proxy_and_memcached Date Modified: 2010-09-24

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