[downtime] CS Email Downtime, Tuesday, December 22, 2015,

Date: Tuesday, December 22, 2015 (06:00-09:00)

Who is affected:
All users of CS Department email services

What is happening:
All incoming email services will be shutdown while the Zimbra server
software is upgraded.

During this time, IMAP, POP, and Webmail will all be unavailable, as will
any email forwarding or filtering. All incoming messages should be safely
queued on our MTAs for delivery after the downtime. IMAP and POP users
should not notice any changes after the downtime. Webmail users will see an
updated interface.

Why is it happening:
This is a reschedule of an upgrade originally scheduled for November 5. At
that time, problems with the upgrade procedure resulted in an inability to
complete the upgrade during the scheduled window. In the intervening time,
several behind-the-scenes updates have taken place and paved the way for a
successful upgrade on this pass.

This upgrade will bring our mail server software up-to-date with the
current release version from Zimbra. Among other things, it will address
several recent vulnerabilities announced in various portions of the

We will post updates to the status page: http://www.csstaff.org
as necessary.

If this downtime will cause you undue hardship, please contact
csstaff@cs.princeton.edu immediately, so we can discuss options to reduce
any negative impact. Your patience is appreciated.
CS Staff
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