Technical Coordinators Meeting Chris Bongaarts Steve Siirila December 7, 2005

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

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

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

Inbox Auto-Filing 23,536 eligible users notified 23,536 eligible users notified 17,280 users auto-filed total (i.e. mailbox scanned, possibly filed) 17,280 users auto-filed total (i.e. mailbox scanned, possibly filed) 1,603 users auto-filed on 12/5 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% Percentage of message data auto-filed down from 10% to 4%

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

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

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

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

‘Till next month… Steve Siirila Steve Siirila Chris Bongaarts Chris Bongaarts