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University of WashingtonEmail Infrastructure
IEEAF – RENU Network Design Workshop
Seattle - 30 Nov 2007
Lori Stevens, Director, Distributed SystemsBrad Greer, Manager, Unix Engineering
Eric Horst, Lead, Unix EngineeringJames Morris, Lead, Windows Engineering
Agenda
Overview Clients Relays Services Other Topics?
Overview
UW is a distributed campus with autonomous departments.
We will discuss central email infrastructure. <uwnetid>@u.washington.edu These central services are for faculty, staff,
student, clinician, alumni.
Clients
Native (IMAP) – Pine/Alpine, Outlook, Thunderbird, EntourageMacMail, VistaMail, etc, etc, etc
Mobile – Pocket Outlook, etc Web – Web Pine, Outlook Web Consider - Offline support Consider - Address Book Service (LDAP)
UW Mail Relays
Process all email for our central services Deskmail / Forwarding Exchange Virtual Domains
Provides email anti-virus and anti-spam Average daily volume in 2003 was 612,859
messages Average daily volume in October 2007 was
over 5.1 million messages
Relay Hardware and Software
Edge servers are broken out by service population and provide anti-spam/anti-virus 9 servers for off-campus mail 3 servers for on-campus mail 5 servers for outbound mail 4 servers for smtp submission services
Dell hardware Running Sophos PureMessage and sendmail
on Red Hat Linux
Message Processing
Discard virus-laden messages and certain attachments
Check messages against DNSBLs and reject certain matches
Analyze message for spam content and discard or reject based on results
Requires constant care
UW Email Stats (2003 -2007 YTD)
2003 2004 2005 2006 20070
200,000,000
400,000,000
600,000,000
800,000,000
1,000,000,000
1,200,000,000
1,400,000,000
Total MessagesSpamViruses
UW Deskmail (Inbox) Service
UW IMAPD MIX folder format Email Delivery Manager (EDM) for filtering
and forwarding Some Mobile Device Support Fac/Staff/Student – provisioned with
Subscriptions/Expirations middleware 7 day backup retention policy Fac/Staff: 1GB quota, Students: 300 MB
Deskmail Account Stats
UW Exchange Service
Microsoft Exchange 2007 Collaboration/Calendar key drivers Broad Blackberry/Mobile Device Support 2GB quota, more available but not
recommended Currently ~600 users, planning to scale to
>10,000 Fac/Staff only For fee/cost recovery
Mailman (Email Lists)
Open Source – locally modified Public and Restricted lists User managed lists Automatically provisioned lists (classes)
Mailman Messages Out/In
UW Mail Routing
Contacts
Lori Stevens, [email protected] Brad Greer, [email protected] James Morris, [email protected] Eric Horst, [email protected]
