Columbia University Information Technology

Service Alerts


Resolved Service Alerts

Resolved Service Alerts

  • Email
    10/01/2016 - 09:10am to 10/03/2016 - 12:00pm

    Update. After 2:17pm Saturday, Office 365 stopped giving the error, and all of the queued mail was delivered to domains hosted on Office 365 within the next 30 minutes or so.


    Update Saturday 9:00am. No change. One of the affected destination systems is On Friday the Business School's IT staff opened a support ticket with Microsoft regarding this situation.


    Update 4:00pm. The situation remains the same.


    Email messages from to external domains hosted on Office 365 are experiencing delays. The domains include universities and businesses. The Office 365 servers accept some messages but in other cases they give the error "Server busy. Please try again later". In the latter case the CUIT systems queue the message and re-try it at 30 minute intervals. It may take more than one re-try for each message to succeed. CUIT staff will check the queues here and update later today on this situation.


  • Email
    10/21/2016 - 08:50am to 10/24/2016 - 04:00pm

    The testing was completed at 11:35. Everything worked as expected. Almost 5,000 messages passed through the Syracuse data center during the course of the test.


    On Saturday morning October 22, from 10:30 to 12:30, CUIT will perform a failover test on the outbound mail servers, to demonstrate that if the Morningside system is unavailable, the system in our Syracuse data center will automatically take over handling mail, and that when Morningside becomes available again, mail flow will come back.

    A non-production test was done on September 29 using test hosts at Morningside and the future production hosts at Syracuse, and the failover worked flawlessly. The test on October 22 will fail over the production hosts using the same method. Based on the successful test we expect no interruption in mail service.

    Outbound mail includes mail from Lionmail, from Exchange (to destinations outside Exchange), from other CUIT systems, and from personal mail clients using the "" smtp server.

    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


  • certain websites
    11/05/2016 - 09:00am to 11/05/2016 - 02:00pm

    Please note next Saturday November 5, Turnitin services will be unavailable from 9am - 2pm EST due to necessary scheduled maintenance.

    This maintenance will be performed on internal network hardware to increase capacity and ensure continued dependable service to our customers.

    Where applicable, please be aware no submissions or grading will be possible through any of the services listed above during this time. We therefore advise that submission deadlines be set outside of this maintenance window.  If you have any questions, please email:


  • Email
    11/28/2016 - 03:52pm to 11/30/2016 - 12:00pm

    UPDATE. This work was completed successfully with no outage.


    On Tuesday morning Nov 29 the incoming mail gateway for will be moved to new servers. No outage is expected.

    The incoming mail gateway handles mail from non-CUIT systems worldwide to addresses

  • Email
    11/29/2016 - 02:58pm to 11/30/2016 - 05:00pm

    UPDATE. This work was done successfully at 8:06.


    The mail server name "" will be migrated to the new mail servers Wednesday 11/30 at about 8:00 a.m. This name is used in the configuration of scanners and similar devices on campus that send mail.

    There will be an outage of a few seconds during which the name will not work. That is why we are doing this early rather than during the 9-5 workday.