Technical Coordinators Meeting Chris Bongaarts Steve Siirila April 12, 2006

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

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

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

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

GopherMail Rollout page includes GopherMail link as of 3/27 page includes GopherMail link as of 3/27 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

IMAP Usage for Mon 4/10

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

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!

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

Bits ‘N Bytes Planning to transition to central e- mail? Contact for assistance. Planning to transition to central e- mail? Contact for

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