spam Policiesspam Policies

CSG – January 2003CSG – January 2003

Dan Oberst – Princeton UniversityDan Oberst – Princeton University

spam Filter spam Filter SurveySurvey

Cornell UniversityCornell University

Harvard (Central Admin Only)Harvard (Central Admin Only)

Penn State UniversityPenn State University

Princeton UniversityPrinceton University

University of BuffaloUniversity of Buffalo

University of Calif. Office of Pres.University of Calif. Office of Pres.

University of MinnesotaUniversity of Minnesota

University of WashingtonUniversity of Washington

University of WisconsinUniversity of Wisconsin

Princeton Princeton ExperienceExperience

Filtering using spam AssassinFiltering using spam Assassin ALL messages >300K taggedALL messages >300K tagged Users “opt in” and choose thresholdUsers “opt in” and choose threshold

Messages moved to spam folderMessages moved to spam folder

87,000 messages/day (since 11/1)87,000 messages/day (since 11/1) 50% meet default threshold50% meet default threshold Users can post/local process (procmail, etc.)Users can post/local process (procmail, etc.) ~1,250 users have opted in (~10%)~1,250 users have opted in (~10%)

HorsepowerHorsepower

Original (current) serverOriginal (current) server SUN 280RSUN 280R

• 4 GB memory4 GB memory• 4x36 (external SCSI); 2x9 GB (internal) disks4x36 (external SCSI); 2x9 GB (internal) disks

mirrored ~75 GBmirrored ~75 GB

• Adding spindles improved performanceAdding spindles improved performance External postofficeExternal postoffice Runs Norton Anti-virus scanning (opt-out) Runs Norton Anti-virus scanning (opt-out) 

Horsepower (future)Horsepower (future)

Part of plan to provide redundant serversPart of plan to provide redundant servers 2 x Sun V480 (4 processors)2 x Sun V480 (4 processors)

8 GB memory8 GB memory 2x36 GB (internal);12x18GB (SCSI) disks raw2x36 GB (internal);12x18GB (SCSI) disks raw

• mirrored ~135GBmirrored ~135GB Lots of spindles for performanceLots of spindles for performance

spam filtering, Norton A/Vspam filtering, Norton A/V Capacity for user whitelists, growth, etc. Capacity for user whitelists, growth, etc.

Future @ PrincetonFuture @ Princeton

Add user whitelistsAdd user whitelists Consider border blacklisting/blockingConsider border blacklisting/blocking Commercial software options?Commercial software options?

Improved performanceImproved performance Better scoringBetter scoring

Integrate with client (e.g. OS/X) softwareIntegrate with client (e.g. OS/X) software Peer-to-peer optionsPeer-to-peer options