Columbia University Information Technology

Service Alerts


Resolved Service Alerts

Resolved Service Alerts

  • Telephony - NetPhone
    (Approximate) 06/25/2014 - 01:15pm to 06/26/2014 - 01:44pm

    UPDATE 1:45PM: The issue is resolved and calls are routing properly now.


    The phone extention  41919 is not currently reachable from Netphones. Callers are getting a message that calls cannot be accepted. Dialing the 10 digits (212-854-1919) is working properly.

    The issue is being looked at by CUIT Engineers. We apologize for this service interruption.

    For a complete list of recent and upcoming scheduled service changes, please visit

  • Email
    06/25/2014 - 12:25pm to 06/25/2014 - 02:52pm

    UPDATE The restart was done successfully.

    The Exchange service will be restarted at 12:45. All users will need to log in again to Outlook. This is being done at short notice to correct the continuing problem where Outlook asks repeatedly for users to log in.


  • Email
    06/25/2014 - 11:37am to 07/02/2014 - 09:53am
    UPDATE. There have been no outages since these incidents.
    The incoming mail gateway for is a pool of 9 servers behind a load balancer. Since Monday 3 hosts in the pool have had outages.

    Remote systems that happened to reach a host when it was not able to accept mail were given a Temporary Fail response, which tells the remote system to try again. The result of this would be a delay in delivery, until the remote system re-tried successfully.

    Some campus hosts including multifunction devices use the same pool of hosts under the name Some devices showed the error "451 Please try again later" (this is the Temporary Fail response) while other devices just re-tried automatically.

    All of the hosts are up and running properly at this time. The cause of the errors is being investigated.
  • Network - Ethernet and Wireless
    06/25/2014 - 05:00am to 06/25/2014 - 08:00am

    UPDATE - This work was completed successfully by 7:15AM.


    On 6/25/14 between 5am and 8am CUIT will be performing necessary network maintenance which will affect multiple buildings.  During portions of this service window, all network services will be unavailable (this includes wired, wireless, and netphones) in the following buildings:

    Engineering Terrace
    Computer Science
    Schermerhorn Extension

    401 W 118
    423 W 120
    501 W 121
    519 W 121
    527 W 121
    500 W 122
    502 W 122
    506 W 122
    520 W 122
    524 W 122
    526 W 122
    530 W 122
    540 W 122

    The following buildings will lose redundancy during the outage but all network services should remain available:
    Teacher's college
    401 W 118
    82 Morningside Dr.
    90 Morningside Dr.
    Faculty House

    The goal of this maintenance is to replace and upgrade legacy network equipment in order to maintain quality, state of the art network services.

    For questions about this event, please contact the CUIT Helpdesk at, or call 212-854-1919.

    To see all active and future Service Alerts, please visit

  • CMS: Courseworks
    (Approximate) 06/24/2014 - 01:30pm to 06/24/2014 - 02:58pm

    UPDATE: CourseWorks is back up.

    CUIT apologizes for the  inconvenience this has caused.  If clients continue to experience issues after the service is back, please contact the CUIT Helpdesk at:


    Phone: 212 854 1919




    Update: CUIT is continuing to investigate the problem.  

    Begining 1:30, CourseWorks became unavailable due to server problems. CUIT administrators have been notified and are currently working to resolve the issue.

    CUIT expects to have a resolution or an update by 2:30. We apologize for this service interruption.

    For a complete list of recent and upcoming scheduled service changes, please visit