1 / 18

E-mail Technical Coordinators Meeting

This meeting summary discusses key e-mail server load issues faced by the organization, including spikes in worm and virus traffic, excessive inbox hits and sizes, and increased SSL usage. Statistical insights reveal 62,781 active users with substantial I/O demands. Proposed performance improvements include aggressive auto-filing, system and SAN I/O tuning, and migrating to new inbox formats. New webmail options are also being deployed. Significant attention is drawn to the phasing out of clear-text passwords for enhanced security.

ailani
Télécharger la présentation

E-mail Technical Coordinators Meeting

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. E-mail Technical Coordinators Meeting Chris Bongaarts Steve Siirila December 7, 2005

  2. E-mail Server Load Issues • Spike in worm and virus e-mail traffic • Excessive Inbox hits • Excessive Inbox sizes • Increased SSL usage • Server capacity limitations • SAN I/O capacity limitations • Backups running into peak hours • Auto-filing running into peak hours

  3. E-Mail Performance Statistics (Mon 11/28) • 62,781 active users • 43 connects/user average • 10MB average size Inbox • 497MB average I/O per user • 31TB I/O total • Top 10 users transferred 1.5 TB

  4. Possible E-mail Performance Improvements • More aggressive auto-filing • Place more limits on frequency of accesses • IMAP/POP daemon tuning • Webmail application tuning • System and/or SAN I/O tuning • Run backups earlier to avoid peak hours • Migrate to new Inbox format (long-term) • Investigate auto-expunge option for users • Additional hardware (coming)

  5. Inbox Auto-Filing • 23,536 eligible users notified • 17,280 users auto-filed total (i.e. mailbox scanned, possibly filed) • 1,603 users auto-filed on 12/5 • 1,175 mailboxes contained eligible messages • 37,032 (3GB) of 526,909 (77GB) messages filed • Percentage of message data auto-filed down from 10% to 4%

  6. New Webmail Options • New Webmail available from JAWS • One or more additional Webmail applications being deployed soon • Looking at non-PHP-based open-source implementations

  7. Phase-out of clear-text passwords • 791 users remain insecure • 666 TC client/server (aquamarine) • 125 TC premium (garnet) • Morris conversion is complete

  8. Top 10 Unauthenticated SMTP gateway IPs • mail.nursing.umn.edu • fever.cidrap.umn.edu • ahcweb05.ahc.umn.edu • wwws3.csom.umn.edu • ucs.micro.umn.edu • omwl-b4-bp.lib.umn.edu • rudi2.reshalls.umn.edu • wwws1.csom.umn.edu • omaweb.stu.umn.edu • x94-206-167.law.umn.edu

  9. Bits ‘N Bytes • Must move equipment out of CHRC • User-maintained whitelist/blacklist enhancements coming soon • Block list reports now mailed at correct time (after 6am)

  10. Steve Siirila sfs@umn.edu 612-626-0244 Chris Bongaarts cab@umn.edu 612-625-1809 ‘Till next month…

More Related