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Technical Coordinators Meeting Summary - Upgrades, Outages, and Enhancements

Recap of recent technical upgrades, outages, and enhancements discussed in the meeting, including GopherMail improvements, rate limiting implementations, phishing spam incidents, and proposed outbound rate limiting. Contact details included.

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Technical Coordinators Meeting Summary - Upgrades, Outages, and Enhancements

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  1. E-mail Technical Coordinators Meeting Chris Bongaarts Steve Siirila June 7, 2006

  2. Upgrades and Outages • Web hotel upgraded 5/14 • Avoided WBOB outage • New hardware (V240) and OS (9) • WBOB power outage 5/20 • UMCal and GopherMail services pointed at servers in 90 Church • LIND power outage 5/27 • New T2000s installed for cluster tests

  3. GopherMail Enhancements • Compose in separate window • Better integration of Address Book/LDAP search in Compose • Improved attachment handling (e.g. view image without downloading) • Improved search interface • Restructured HTML/CSS for better accessibility

  4. Rate Limiting at Work • IP 66.216.88.85 connected on 5/22 at 8:51am • Already on SORBS as known spammer • Limited to 1 recipient/hour • 3 messages accepted (8:51am, 9:51am, and 10:51am) • IP appeared on XBL at 10:53am, CBL at 11:17am • Of 16048 recipients: 7001 temperr’d, 7110 blocked, 1561 unknown users, 242 inactive, 118 accepted(3 normal, 107 allow all mail, 8 permit sender)

  5. Phishing Spam • Phishing e-mail sent Sat 5/20 between 0700 and 0800 • Originated from premium interactive server (garnet) • Targeted 75,000+ U of M recipients • Account upgrades now manually reviewed

  6. Proposed OutboundRate Limiting • Authenticated SMTP gateway users limited based on internet ID • Mail relay users limited based on IP address • Exceptions for bulk e-mail senders • Default rates determined by evaluating current usage

  7. Bits ‘N Bytes • Discussion: Internet Password Expiration

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

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