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E-mail Technical E-mail Technical Coordinators MeetingCoordinators Meeting
Chris BongaartsChris Bongaarts
Steve SiirilaSteve Siirila
September 13, 2006
E-mail server outagesE-mail server outages
Intermittent problems continued Intermittent problems continued with with redred cluster throughout August cluster throughout August
Cluster de-configured by Sep 1Cluster de-configured by Sep 1stst Plan: re-build cluster on new Plan: re-build cluster on new
hardware and simulate heavy loadhardware and simulate heavy load Work with Sun to address QFS issuesWork with Sun to address QFS issues
UMCal Hardware UMCal Hardware UpgradeUpgrade Plan: upgrade DR server, switch overPlan: upgrade DR server, switch over Hardware upgraded to Sun V440 Hardware upgraded to Sun V440
9/139/13 Due to shared home FS, full testing Due to shared home FS, full testing
was limited to off-hourswas limited to off-hours Unexpected write-protection forced Unexpected write-protection forced
SAN reconfigurationSAN reconfiguration Next step: DR server upgradeNext step: DR server upgrade
MiscellaneousMiscellaneous
Running near capacity on MX servers; will Running near capacity on MX servers; will be reconfiguring servers to gain capacitybe reconfiguring servers to gain capacity
Decreased maximum per-host SMTP Decreased maximum per-host SMTP connection limit from 10 to 5connection limit from 10 to 5
Added a 3Added a 3rdrd GopherMail server GopherMail server Now monitoring IMAP response timeNow monitoring IMAP response time Upped max clients from 96 to 150 on Upped max clients from 96 to 150 on
www.umn.eduwww.umn.edu servers 8/22 servers 8/22 Migration to DataCenter network at WBOBMigration to DataCenter network at WBOB
Total IMAP Users (March 17 - Sep 10 )
0
5,000
10,000
15,000
20,000
25,000
30,000
35,000
40,000
45,000
Date
Nu
mb
er o
f Use
rsWebmail Pro+3.0 UsersGopherMail UsersOther Users
Total IMAP Connections (Mar 17 - Sep 10)
0
200,000
400,000
600,000
800,000
1,000,000
1,200,000
1,400,000
Date
Nu
mb
er o
f Co
nn
ectio
ns
Webmail Pro+3.0 Connections
GopherMail Connections
Other Connections
Top 9 mail clients Top 9 mail clients (9/11)(9/11) Thunderbird (3453)Thunderbird (3453) Microsoft Office Outlook (3041)Microsoft Office Outlook (3041) Apple Mail (1778)Apple Mail (1778) Microsoft Outlook Express (1585)Microsoft Outlook Express (1585) QUALCOMM Windows Eudora (1427)QUALCOMM Windows Eudora (1427) Oracle Connector for Outlook (673)Oracle Connector for Outlook (673) Microsoft Outlook (617)Microsoft Outlook (617) Microsoft Entourage (584)Microsoft Entourage (584) Mozilla (556)Mozilla (556)
Incoming Email Statistics (Past 12 Months)
0.0
1.2
2.4
3.6
4.8
6.0
7.2
8.4
9.6
10.8
12.0
09/0
509
/2610
/1711
/0711
/2812
/1901
/0901
/3002
/2003
/1304
/0304
/2405
/1506
/0506
/2607
/1708
/0708
/28
Week Ending
Mil
lio
ns
of
Me
ss
ag
es
BlockedUnknown userGrey ListedAcceptedOther
Incoming Email Statistics (Aug 7 - Sep 11)
User Inactive0.7%
Blocked38.8%
Relay Denied0.3% Greylist/Ratelim
25.2%
Accepted21.9%
User allowed0.3%
Unknown user12.8%
Messages Blocked By Reason (Past 12 Months)
0.0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
Week Ending
Mill
ion
s o
f M
essa
ges
Blo
cked
Spam source Dynamic Insecure Protocol Violation DNS
Spam/Virus Blocking by Reason (August 7 - Sep. 10)
Misc0
0%
Bad mail from27,283
0%
DNS5,202,808
16%
Spam source5,459,848
17%
Protocol Violation159,246
1%
Insecure5,758,285
18%Dynamic
14,931,49048%
Viruses Detected (Past 12 months)
0
20,000
40,000
60,000
80,000
100,000
120,000
140,000
160,000
180,000
200,000
8/15 9/15 10/15 11/15 12/15 1/15 2/15 3/15 4/15 5/15 6/15 7/15 8/15
Week Ending
Vir
use
s D
etec
ted
Bits ‘N BytesBits ‘N Bytes
The The polisci.umn.edupolisci.umn.edu domain is domain is now handled by central e-mail now handled by central e-mail serversservers
Work continues on Dovecot Work continues on Dovecot evaluationevaluation
‘‘Till next month…Till next month…
Steve SiirilaSteve Siirila [email protected]@umn.edu 612-626-0244612-626-0244
Chris BongaartsChris Bongaarts [email protected]@umn.edu 612-625-1809612-625-1809
