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Performance: Intermittent Exchange email issues

Last Updated:
2012-05-15 00:00:00
Event:
2012-04-26 00:00:00
Status:
Closed
Brief Description:
Email Services
User Impact:
N/A
Workaround:
There is no workaround for this issue
Current Status:
N/A
Services Affected:
Full Description:
Exchange email and calendar is running slowly at times. You may occasionally see slow or lost connections, and longer than usual times to process email or calendar tasks. Trying again in a little while is the best advice for now. CIT is investigating solutions.



Timeline of Changes

Description Current Status Date Time
Performance appears to be considerably improved after changes made the weekend of May 12. CIT is continuing to monitor the system, and plans to take some additional measures the weekend of May 19. Performance appears to be considerably improved after changes made the weekend of May 12. CIT is continuing to monitor the system, and plans to take some additional measures the weekend of May 19. 2012-05-15 00:00:00
We are taking the following steps to provide some relief to email/calendar users.\n\nWe have added significantly more Active Directory Domain Controller capacity to support Exchange. (For Exchange, the AD Domain Controller keeps track of users, mailboxes, address lists, groups, etc.)\n\nWe are working to reproduce the problems observed last weekend, on May 5, in our test system, with intentions of identifying how to successfully re-implement the change this coming Saturday, May 12.\n\nWe are examining changes in our Load Balancer configuration to even out the load spikes that have been one component of the recent problems.\n We are taking the following steps to provide some relief to email/calendar users.\n\nWe have added significantly more Active Directory Domain Controller capacity to support Exchange. (For Exchange, the AD Domain Controller keeps track of users, mailboxes, address lists, groups, etc.)\n\nWe are working to reproduce the problems observed last weekend, on May 5, in our test system, with intentions of identifying how to successfully re-implement the change this coming Saturday, May 12.\n\nWe are examining changes in our Load Balancer configuration to even out the load spikes that have been one component of the recent problems.\n 2012-05-07 00:00:00
Changes implemented Saturday morning, May 5, were backed out on Saturday night. We began receiving reports in the afternoon from users experiencing difficulty connecting to Exchange with Outlook for Windows from off site. Other modes of access, as well as Outlook for Windows on site and over VPN were not affected. After reasonable troubleshooting efforts failed, CIT staff reverted to the Exchange configuration in operation prior to Saturday morning's change. We will conduct further investigation of the Outllook for Windows problem this week to clear the path for reimplementing the change next weekend. Changes implemented Saturday morning, May 5, were backed out on Saturday night. We began receiving reports in the afternoon from users experiencing difficulty connecting to Exchange with Outlook for Windows from off site. Other modes of access, as well as Outlook for Windows on site and over VPN were not affected. After reasonable troubleshooting efforts failed, CIT staff reverted to the Exchange configuration in operation prior to Saturday morning's change. We will conduct further investigation of the Outllook for Windows problem this week to clear the path for reimplementing the change next weekend. 2012-05-06 00:00:00
The number of reported cases has increased during the week, and CIT staff are attempting to take some short term measures to provide some relief. Some major changes are scheduled for Saturday morning (May 5), which we believe will address the major cause of the bottleneck. The number of reported cases has increased during the week, and CIT staff are attempting to take some short term measures to provide some relief. Some major changes are scheduled for Saturday morning (May 5), which we believe will address the major cause of the bottleneck. 2012-05-03 00:00:00
Episodes have generally cleared up in around fifteen minutes, so in most cases waiting a short time and trying your email operation again will succeed.\n\nCIT is preparing a short-term mitigation of the problem within the next ten days by providing alternate Active Directory servers for Exchange, and a longer-term fix for the architectural problem, which requires additional hardware. Episodes have generally cleared up in around fifteen minutes, so in most cases waiting a short time and trying your email operation again will succeed.\n\nCIT is preparing a short-term mitigation of the problem within the next ten days by providing alternate Active Directory servers for Exchange, and a longer-term fix for the architectural problem, which requires additional hardware. 2012-04-26 00:00:00
Detailed description:\n\nCIT has been investigating episodes of slow response from Exchange. This may manifest in different ways depending on the email program you are using, and which Exchange server you are connecting to, and may include 'stalled' connections, dropped web sessions, or spinning hourglass or beachballs depending on your operating system. \n\nEpisodes have generally cleared up in around fifteen minutes, so in most cases waiting a short time and trying your email operation again will succeed.\n\nThe root of this problem appears to be a bottleneck in communication between Exchange and Active Directory. Exchange depends on Active Directory for nearly all information about system configuration and user directory. \n\nCIT is preparing a short-term mitigation of the problem within the next ten days by providing alternate Active Directory servers for Exchange, and a longer-term fix for the architectural problem, which requires additional hardware. \n\nWe appreciate your patience while we work on this issue. Detailed description:\n\nCIT has been investigating episodes of slow response from Exchange. This may manifest in different ways depending on the email program you are using, and which Exchange server you are connecting to, and may include 'stalled' connections, dropped web sessions, or spinning hourglass or beachballs depending on your operating system. \n\nEpisodes have generally cleared up in around fifteen minutes, so in most cases waiting a short time and trying your email operation again will succeed.\n\nThe root of this problem appears to be a bottleneck in communication between Exchange and Active Directory. Exchange depends on Active Directory for nearly all information about system configuration and user directory. \n\nCIT is preparing a short-term mitigation of the problem within the next ten days by providing alternate Active Directory servers for Exchange, and a longer-term fix for the architectural problem, which requires additional hardware. \n\nWe appreciate your patience while we work on this issue. 2012-04-26 00:00:00