1. 9/16/1998CSG - Chicago E- Mail@Princeton.EDU 1 E-Mail @Princeton.EDU Collaboration Services Group (CSG) Systems And Networking Computing & Information Technology Princeton University Michael R. Gettes (Mgr) gettes@Princeton.EDU Curtis W. Hillegas curt@Princeton.EDU William J. Sproule sproule@Princeton.EDU

2. 9/16/1998CSG - Chicago E- Mail@Princeton.EDU 2 CSG - What We Do: Electronic Mail (and Lists) Directories (LDAP, NIS, CSO) Document Management and Printing/Faxing Security: Kerberos, X.509 Certificates Calendaring

3. 9/16/1998CSG - Chicago E- Mail@Princeton.EDU 3 Campus E-mail Status 11000+ Users Currently Delivering Over 100K Messages/Day Delivering Over 2GB/day Peaks Over 6000/hr with Minimum Load 90% of Deliveries in 2 Minutes Project Started March 1998

4. 9/16/1998CSG - Chicago E- Mail@Princeton.EDU 4 E-mail Environment Yesterday Unix Clients Via NFS POP3 Clients Novell Pegasus Mail (WinPmail) Mainframe Mail - Rice Mailbook NIS Directory For Usernames and Routing Sendmail 8.6.9 With Local Modifications

5. 9/16/1998CSG - Chicago E- Mail@Princeton.EDU 5 Migration (July, 1998) Turned Off NFS Converted 12000 Users From Mbox to IMAP Converted 1.5 Million Msgs in 7 Hours Minimal Downtime (< 14 Hours)

6. 9/16/1998CSG - Chicago E- Mail@Princeton.EDU 6 E-mail Today NO NFS ACCESS (YEA)!!! IMAP4 and POP3 LDAP Directory For Usernames and Routing –UNIX Uid Not Required to Read Mail Provides a Central, Secure Message Store Moving off Mainframe and Novell Service Goal: Like Phone System (6 mins)

7. 9/16/1998CSG - Chicago E- Mail@Princeton.EDU 7 Today (Cont’d) Clients Supported –Netscape Communicator 4.05 (or Higher) –Netscape Messenger Express 3.0 –Microsoft Outlook (or Express) –UofW PINE (TTY Access) –Others (IMAP4 or POP3 Compliant) Conversion Tools for Migration of E-mail and Address Books

8. 9/16/1998CSG - Chicago E- Mail@Princeton.EDU 8 Architecture Sendmail 8.9.1 w/ Anti-SPAM Netscape Directory Server v3.11 Netscape Messaging Server v3.6 Server Sun E4000 –1GB RAM, 10GB Swap –6x336 Mhz CPU –Sun A5000 Arrays With RAID 0+1 –Server Is OVERSIZED

9. 9/16/1998CSG - Chicago E- Mail@Princeton.EDU 9 Architecture (Cont’d) 1 Server Handles IMAP4/POP3/SMTP 1 Server Handles.forward (Program Mailers) 1 Server Handles Mailing Lists (CREN Listproc) 1 Server Handles External Mail In/Out –Sendmail on Inbound Handles Policy –Zmailer on Outbound Handles Efficient SMTP

10. 9/16/1998CSG - Chicago E- Mail@Princeton.EDU 10 Architecture (Cont’d) No User Logins on Mail Store All Mail Goes Through Sendmail to Implement Princeton Policies NS Messaging Server Is Only For IMAP/POP Reading: Allows For Change Of Service Sendmail Does All Routing, Header Rewrite, Anti-spam, Etc.

11. 9/16/1998CSG - Chicago E- Mail@Princeton.EDU 11 Architecture (Cont’d) EMAILBOX Attribute Determines Where Mail Is Delivered; We Allow Users To Set This Via Authenticated WWW Page EMAILBOX = ‘mail.Princeton.EDU’ Will Deliver to Store EMAILBOX = ‘forward.Princeton.EDU’ Allows Users to Have.forward Files on Separate Server (UNIX Uid Required)

12. 9/16/1998CSG - Chicago E- Mail@Princeton.EDU 12 Architecture (Cont’d) EMAILBOXALTERNATE Allows Delivery to Multiple Locations; Allows Us to Eliminate.forward Files for Non- program Mailer and Non-file Delivery. EMAILBOXREWRITE Allows Us to Re- write Users Address, Allows for Single Mail Presence No Matter Where User Sends Mail From.

13. 9/16/1998CSG - Chicago E- Mail@Princeton.EDU 13 Architecture (Cont’d) ALIASES = EMAILBOX + EMAILBOXALTERNATE All EMAIL Name Space Entities Are in LDAP! NO Hidden Files.

14. 9/16/1998CSG - Chicago E- Mail@Princeton.EDU 14 Futures Kerberos X.509 Certificates S/MIME Secure SMTP ACAP?