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Status Update on Spam Reduction Efforts in UABIT

Status Update on Spam Reduction Efforts in UABIT. UAB IT Spam Scoring Team : Robert Cloud II; Jill Gemmill; Chris Green; Jeffrey Jessee; Landy Manderson; John-Paul Robinson; David Shealy; Terry Tatum. Current Spam Service - Key Points.

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Status Update on Spam Reduction Efforts in UABIT

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  1. Status Update on Spam Reduction Efforts in UABIT UAB IT Spam Scoring Team: Robert Cloud II; Jill Gemmill; Chris Green; Jeffrey Jessee; Landy Manderson; John-Paul Robinson; David Shealy; Terry Tatum UAB IT Advisory Group

  2. Current Spam Service - Key Points • Use SpamAssassin for scoring all @uab.edu e-mail http://spamassassin.apache.org • UAB E-mail paths: • Header of Spam w/ SA = 26 X-Spam-Status: Yes, hits=26.9 required=5.0 tests=DCC_CHECK,DNS_FROM_AHBL_RHSBL,FUZZY_OBLIGATION, HELO_DYNAMIC_IPADDR,HTML_MESSAGE,MIME_HTML_ONLY, RCVD_IN_MAPS_DUL,RCVD_IN_NJABL_DUL,RCVD_IN_SORBS_DUL, RCVD_IN_WHOIS_INVALID,RCVD_IN_XBL,URIBL_JP_SURBL, URIBL_OB_SURBL,URIBL_SBL version=3.1.0 X-Spam-Level: ************************** X-Spam-Checker-Version: SpamAssassin 3.001000 (2005-09-13) / filter 2006-01-17mb

  3. Number E-mails vs. SA Score

  4. Cumulative Percentage of E-mail vs. SA Score

  5. Issues with Current Filtering • OWA client has limited filtering capabilities • Spam adds overhead, takes up significant resources on local servers • Spam is passed along to ISP’s as a result of @uab.edu forwarding • E-mail sent to ISP may not use filters • Legitimate e-mail sent to ISP may not be available to be read • Legitimate e-mail sent to ISP may be delayed • UAB Servers could be placed on “black list”

  6. Pilot Testing of Spam Blocking • Users can select “high water mark” for which all their incoming e-mail with this SA score or higher will be discarded. • Pilot test started Saturday, Jan 28, 2006 • Pilot testing group was within IT and increased from 3 to 15 users during first week, and was been offered to TIMGROUP on Feb 17, 2006 • During first week, 14,224 messages were not sent to users.

  7. Percentage Drop in Junk E-mail during Pilot Test

  8. Timeline for Campus Wide Implementation • Spam Blocking plan will include SA score to use for default “high water mark” for each @uab.edu user with opt-out feature and feature that each user can change their SA “high water mark” • Train AskIT agents on spam blocking service and opt-out feature • Make recommendation of Spam Blocking plans to VP of IT by 24 Feb 06 • Obtain UAB Administration approval for implementation on Friday, March 10. • E-mail all @uab.edu email users of spam blocking plan on Sunday, March 5

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