1. E-mail Technical Coordinators Meeting Chris Bongaarts Steve Siirila April 12, 2006

2. E-mail Server Upgrades Clustering preparations Clustering preparations –User management changes –Shared filesystem testing (QFS) Dovecot IMAP/POP server Dovecot IMAP/POP server –Indexes mailboxes for faster performance –Rebuilds missing/corrupted indexes on- the-fly

3. E-mail Server Upgrades Evaluating new Sun hardware (T2000) Evaluating new Sun hardware (T2000) –Claim: same performance as V890 for 15% of physical space 15% of physical space 10% of power 10% of power 20% of price 20% of price –We shall see… –Requires Solaris 10

4. E-mail Storage Policies Nightly backups of inbox & home (e.g. IMAP folders, web-docs) Nightly backups of inbox & home (e.g. IMAP folders, web-docs) Retained for 2 weeks Retained for 2 weeks Intended for disaster recovery Intended for disaster recovery Legal issues re: backup retention Legal issues re: backup retention Deleted users Deleted users –Backups retained 90 days –Restored upon account reactivation

5. Aphelion Directory 3 LDAP servers fully populated and actively updated 3 LDAP servers fully populated and actively updated Awaiting physical space for 4 th server Awaiting physical space for 4 th server Rolling out production use first as additional ldap.umn.edu servers Rolling out production use first as additional ldap.umn.edu servers Required for new version of messaging software Required for new version of messaging software

6. GopherMail Rollout www.mail.umn.edu page includes GopherMail link as of 3/27 www.mail.umn.edu page includes GopherMail link as of 3/27 www.mail.umn.edu HTTP connection limit artificially caused performance issues until 3/29 HTTP connection limit artificially caused performance issues until 3/29 Excellent response time resumed after connection limit increased Excellent response time resumed after connection limit increased

9. IMAP Usage for Mon 4/10

10. MTA Rate Limiting Proposal Unclassified MTAs: Unclassified MTAs: –0 to 8 hours old: 1 message/hour –8 to 36 hours old: 10 messages/hour –Listed on block list: 1 message/day MTAs classified as bulk or protected: MTAs classified as bulk or protected: –No rate limiting

11. How Spam Reports Help Current spam reports are tallied by IP Current spam reports are tallied by IP Summaries of spam reports are generated at least once daily Summaries of spam reports are generated at least once daily Offending sites are re-greylisted or blocked as appropriate Offending sites are re-greylisted or blocked as appropriate Researching ways to automate the above Researching ways to automate the above Please report spam: it benefits all of U! Please report spam: it benefits all of U!

17. Phase-out of unauthenticated SMTP Relaying thru smtp-gw.tc.umn.edu turned off 3/29 Relaying thru smtp-gw.tc.umn.edu turned off 3/29 4/10: 696 IP addresses registered for relay.tc.umn.edu service 4/10: 696 IP addresses registered for relay.tc.umn.edu service

19. Bits ‘N Bytes Planning to transition to central e- mail? Contact isgroup@umn.edu for assistance. Planning to transition to central e- mail? Contact isgroup@umn.edu for assistance.isgroup@umn.edu

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