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You are viewing an outdated report. The latest version of this report was published on April 1st, 2020


    
Mail (MX) Server Survey
December 1st, 2015

Report Description
This report is a comprehensive report involving all mail servers we know of visible on the internet. For each domain in our conventional web server survey, we also determine the list of mail servers that provide inbound mail services (via MX record lookups). Each unique mail server is connected to once each month, where we wait for the server's "220 " message which usually accompanies a banner revealing the server software being used.

Basic Response Statistics
When connecting to an MX server, a number of different responses are possible. The remote server may not be up and running or completely refusing connections, it may not respond back with a "220 " line in the amount of time we wait, nor will it always provide a banner that identifies the type of software running.

Description> Number of Servers Percent
Total Number of MX Servers Queried2,383,827   100.0%
Number of Servers that didn't respond442,35618.56%
    Server didn't open socket432,55318.15%
    Server didn't provide banner9,8030.41%
Server provided banner1,941,47181.44%
Server banner identifies software in use1,139,75747.81%

As indicated by the above table, of the 2,383,827 servers queried, only 1,139,757 servers responded with a banner that allow us to identify the software being used. All of the remaining information in this report is based on the responses that allowed us to identify the software in use.

Basic Technology Breakdown
Server Type Number of Servers Percent
Exim606,58653.22%
Postfix371,88232.63%
Sendmail75,9096.66%
MailEnable28,5112.50%
Microsoft23,4452.06%
MDaemon17,1671.51%
IMail3,6160.32%
CommuniGate Pro2,4010.21%
Lotus Domino2,0700.18%
WinWebMail1,6850.15%
XMail1,4880.13%
Qmail Toaster1,1140.10%
SurgeSMTP8140.07%
Kerio7470.07%
Merak4850.04%
ArGoSoft3530.03%
OpenSMTPD2770.02%
MagicMail2500.02%
Post.Office2230.02%
GroupWise1950.02%
Gordano Messaging Suite (GMS)1830.02%
Trend Micro1150.01%
InterScan VirusWall620.01%
VisNetic440.00%
Mirapoint400.00%
OpenVMS200.00%
Mercury190.00%
WebSTAR V130.00%
Interscan120.00%
ModusMail110.00%
Neon Mail Server70.00%
MessageWall70.00%
NetIQ MailMarshal30.00%
WebSTAR20.00%
MAILsweeper10.00%

Detailed Breakdown of Revisions on a Per-Server Basis

Exim (606,586 servers)

Version Number of Servers Percent
4.86323,35453.31%
4.85118,13319.48%
4.8462,85110.36%
4.7217,4162.87%
4.8017,3612.86%
4.8217,1872.83%
4.80.115,7072.59%
4.7614,3192.36%
Other20,2583.34%

Postfix (371,882 servers)

Version Number of Servers Percent
Other371,882100.00%

Sendmail (75,909 servers)

Version Number of Servers Percent
8.14.516,92422.30%
8.13.814,93519.67%
8.14.414,47019.06%
8.13.19,05511.93%
8.14.34,9816.56%
8.14.91,8872.49%
8.14.71,8142.39%
8.12.11.200603081,6782.21%
8.13.6.200606141,0831.43%
8.14.29301.23%
8.15.29171.21%
8.12.107671.01%
Other6,4688.52%

MailEnable (28,511 servers)

Version Number of Servers Percent
8.60--2,5959.10%
6.5--1,7746.22%
1.986--1,6105.65%
8.53--1,5685.50%
8.51--1,1143.91%
5.10--8773.08%
9.00--8763.07%
8.04--8332.92%
8.60-8.60-8102.84%
8.50--6332.22%
4.26--6302.21%
8.00--6152.16%
6.0--5832.04%
7.06--5722.01%
9.00--9.004291.50%
8.60--8.604261.49%
7.07--3661.28%
8.55--3641.28%
7.0--3571.25%
9.00-9.00-3571.25%
7.50--3401.19%
6.57--3391.19%
6.88-6.88-3191.12%
6.70--3131.10%
7.53--2961.04%
1.981--2951.03%
Other9,22032.34%

Microsoft (23,445 servers)

Version Number of Servers Percent
6.0.3790.467516,89072.04%
6.0.3790.39591,8898.06%
7.5.7601.175141,7707.55%
6.0.3790.18305372.29%
8.5.9600.163845212.22%
7.0.6002.182644131.76%
8.0.9200.163842861.22%
5.0.2195.73812761.18%
Other8633.68%

MDaemon (17,167 servers)

Version Number of Servers Percent
15.0.31,5939.28%
15.5.21,3377.79%
15.5.11,1316.59%
11.0.38524.96%
11.0.07564.40%
13.5.17264.23%
13.0.46733.92%
13.0.56723.91%
15.5.04842.82%
13.6.33902.27%
12.5.63772.20%
10.0.03692.15%
14.5.23622.11%
12.5.43101.81%
10.1.23081.79%
14.0.32811.64%
14.5.32711.58%
15.0.12521.47%
10.1.12471.44%
10.1.02041.19%
14.0.22011.17%
9.6.12011.17%
13.0.21941.13%
13.6.21911.11%
9.6.61851.08%
Other4,60026.80%

IMail (3,616 servers)

Version Number of Servers Percent
8.2240011.06%
12.5.3.933619.98%
12.4.2.272747.58%
12.3.0.1002707.47%
9.232426.69%
12.4.1.151905.25%
8.151754.84%
8.051464.04%
12.5.3.991454.01%
12.2.0.2351153.18%
11.51072.96%
11.031042.88%
12.5.2.62952.63%
12.5.1.60772.13%
10.02601.66%
11.02591.63%
7.07571.58%
12.4.1.9561.55%
12.5.0.246551.52%
7.15501.38%
11.01471.30%
12.1.0.270461.27%
8.00431.19%
Other44212.22%

CommuniGate Pro (2,401 servers)

Version Number of Servers Percent
5.1.1625110.45%
6.0.111365.66%
6.0.91194.96%
6.1.51034.29%
6.1.6964.00%
6.1.2913.79%
5.4.11833.46%
5.2.20803.33%
6.0.10712.96%
6.1.7602.50%
5.3.13532.21%
6.0.7532.21%
4.1.8512.12%
5.3.15512.12%
5.2.3482.00%
5.0.14461.92%
6.1.4411.71%
6.0.5391.62%
6.0.8371.54%
5.2.16291.21%
5.4.8291.21%
5.4.6261.08%
5.1.12251.04%
Other78332.61%

Lotus Domino (2,070 servers)

Version Number of Servers Percent
8.5.3FP631715.31%
8.5.328813.91%
8.5.2984.73%
8.5.1753.62%
7.0.2693.33%
8.5.3FP3673.24%
8.5623.00%
8.5.2FP4623.00%
8.5.3FP2623.00%
8.5.2FP3502.42%
8.5.3FP4502.42%
8.5.3FP1482.32%
8.5.3FP5462.22%
8.5.2FP2432.08%
7.0.3391.88%
8.5.1FP5361.74%
8.0.1321.55%
7.0321.55%
7.0.1311.50%
8.0291.40%
6.5.1271.30%
8.0.2261.26%
8.5.2FP1231.11%
6.5.4211.01%
6.5211.01%
7.0.4211.01%
Other39519.08%

WinWebMail (1,685 servers)

Version Number of Servers Percent
3.9.0.729917.74%
3.8.1.327816.50%
3.7.6.11337.89%
3.9.0.11297.66%
3.8.0.11166.88%
3.8.1.5905.34%
3.8.1.1885.22%
3.7.3.1814.81%
3.8.5.1784.63%
3.7.7.3593.50%
3.8.6.1583.44%
3.7.1.1462.73%
3.8.2.1422.49%
3.7.5.1251.48%
3.8.3.1251.48%
3.8.3.3221.31%
3.7.0.5201.19%
3.7.0.3181.07%
Other784.63%

XMail (1,488 servers)

Version Number of Servers Percent
1.2757838.84%
1.2242928.83%
1.2516911.36%
1.261238.27%
1.24654.37%
1.21352.35%
1.23201.34%
1.20161.08%
Other533.56%

Qmail Toaster (1,114 servers)

Version Number of Servers Percent
1.31,04493.72%
1.2191.71%
1.03.5151.35%
Other363.23%

SurgeSMTP (814 servers)

Version Number of Servers Percent
6.9c-113816.95%
6.5a2-29912.16%
7.0c2-28510.44%
6.7c-1708.60%
6.5a-1374.55%
6.3c2-2303.69%
5.2a-1212.58%
3.9e-1192.33%
3.8k4-4172.09%
6.4a-1172.09%
6.9d-29151.84%
5.3h2-2151.84%
7.0c-1121.47%
7.1a-1121.47%
7.1b-6121.47%
4.0u4-4101.23%
6.1c-191.11%
Other19624.08%

Kerio (747 servers)

Version Number of Servers Percent
6.7.315220.35%
6.7.07610.17%
6.6.2608.03%
6.5.2567.50%
6.5.0496.56%
6.7.2425.62%
6.4.1415.49%
6.6.1395.22%
6.7.1344.55%
6.3.1314.15%
6.5.1293.88%
6.3.0192.54%
6.4.0172.28%
6.4.2152.01%
6.6.0131.74%
6.1.3101.34%
6.2.081.07%
Other567.50%

Merak (485 servers)

Version Number of Servers Percent
8.0.315632.16%
8.9.16814.02%
8.5.0377.63%
8.3.8265.36%
7.5.2265.36%
7.4.5244.95%
7.6.4183.71%
7.6.1132.68%
7.0.1122.47%
8.3.15102.06%
7.2.091.86%
7.4.281.65%
8.9.071.44%
8.2.461.24%
6.0.851.03%
6.2.151.03%
Other5511.34%

ArGoSoft (353 servers)

Version Number of Servers Percent
1.8 (1.8.9.6)10630.03%
1.8 (1.8.9.3)4913.88%
1.8 (1.8.9.5)4312.18%
1.8 (1.8.9.1)339.35%
1.8 (1.8.8.8)205.67%
1.8 (1.8.8.7)185.10%
1.8 (1.8.9.2)123.40%
1.8 (1.8.6.0)82.27%
1.8 (1.8.9.4)71.98%
1.8 (1.8.7.3)61.70%
1.8 (1.8.8.9)51.42%
1.8 (1.8.9.0)41.13%
Other4211.90%

OpenSMTPD (277 servers)

Version Number of Servers Percent
Other277100.00%

MagicMail (250 servers)

Version Number of Servers Percent
Other250100.00%

Post.Office (223 servers)

Version Number of Servers Percent
4.2.24620.63%
3.5.33113.90%
4.1.2.42712.11%
4.3219.42%
4.2.1.383.59%
4.1.0.283.59%
4.1.183.59%
4.0.173.14%
3.9.2.373.14%
4.2.1.173.14%
3.1.2J52.24%
4.252.24%
3.5.3J41.79%
3.8.7.441.79%
4.1.2.331.35%
3.1.231.35%
3.9.231.35%
3.5.131.35%
Other2310.31%

GroupWise (195 servers)

Version Number of Servers Percent
14.0.12713.85%
14.0.22412.31%
8.0.32110.77%
7.0.3199.74%
6.5.7178.72%
8.0.2126.15%
7.0.4115.64%
7.0.294.62%
14.0.073.59%
12.0.263.08%
7.0.152.56%
6.5.642.05%
6.0.442.05%
6.5.431.54%
6.0.331.54%
14.2.031.54%
6.0.221.03%
12.0.021.03%
12.0.121.03%
12.0.321.03%
6.5.521.03%
8.0.021.03%
8.0.121.03%
12.0.421.03%
Other42.05%

Gordano Messaging Suite (GMS) (183 servers)

Version Number of Servers Percent
Other183100.00%

Trend Micro (115 servers)

Version Number of Servers Percent
5.74236.52%
5.52320.00%
5.182017.39%
7.0108.70%
7.176.09%
8.543.48%
3.5332.61%
7.521.74%
Other43.48%

InterScan VirusWall (62 servers)

Version Number of Servers Percent
Other62100.00%

VisNetic (44 servers)

Version Number of Servers Percent
9.3.2.0920.45%
6.2.2.049.09%
9.1.4.149.09%
8.5.0.836.82%
5.0.2.336.82%
5.8.6.636.82%
5.5.8.324.55%
7.6.1.024.55%
7.2.4.124.55%
9.1.4.024.55%
5.3.5.024.55%
8.5.0.512.27%
8.3.0.112.27%
5.4.5.412.27%
8.0.312.27%
8.0.3.112.27%
5.0.2.012.27%
7.2.4.012.27%
9.1.4.1 provided by Techfount Systems Pte Ltd12.27%
Other00.00%

Mirapoint (40 servers)

Version Number of Servers Percent
4.4.3-GA717.50%
4.3.6-GA512.50%
4.4.2a-FCS410.00%
4.3.5-GA410.00%
4.4.5-GA410.00%
4.1.10-GA25.00%
4.4.5a-GA25.00%
4.4.4-GA25.00%
3.10.10a-GA25.00%
4.3.3-GA25.00%
4.1.6-GA12.50%
4.1.9-GA12.50%
3.7.5a-GA12.50%
3.8.4-GA12.50%
3.10.2-GA12.50%
4.4.6-GA12.50%
Other00.00%

OpenVMS (20 servers)

Version Number of Servers Percent
8.3945.00%
7.3630.00%
8.4525.00%
Other00.00%

Mercury (19 servers)

Version Number of Servers Percent
3.321052.63%
1.48736.84%
3.2115.26%
4.x15.26%
Other00.00%

WebSTAR V (13 servers)

Version Number of Servers Percent
5.4.1646.15%
5.4.0430.77%
5.3.317.69%
5.3.417.69%
5.3.217.69%
Other00.00%

Interscan (12 servers)

Version Number of Servers Percent
3.81-Build_1084216.67%
3.81-Build_1022216.67%
3.55 (build 1029)216.67%
3.5 (build 1294)18.33%
3.8-Build_301318.33%
3.53 (build 2013)18.33%
3.53 (build 2017)18.33%
3.55 (build 1016)18.33%
3.8-Build_108018.33%
Other00.00%

ModusMail (11 servers)

Version Number of Servers Percent
4.35.477.0654.55%
4.1.361.21218.18%
3.2.315.019.09%
4.35.477.819.09%
3.1.302.019.09%
Other00.00%

Neon Mail Server (7 servers)

Version Number of Servers Percent
3.0.7342.86%
3.1.0228.57%
3.1.4114.29%
3.1.2114.29%
Other00.00%

MessageWall (7 servers)

Version Number of Servers Percent
1.0.87100.00%
Other00.00%

NetIQ MailMarshal (3 servers)

Version Number of Servers Percent
5.5.6.5133.33%
5.5.4.17133.33%
5.5.6.7133.33%
Other00.00%

WebSTAR (2 servers)

Version Number of Servers Percent
Other2100.00%

MAILsweeper (1 servers)

Version Number of Servers Percent
4.3.20.01100.00%
Other00.00%




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