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You are viewing an outdated report. The latest version of this report was published on August 1st, 2019


    
Mail (MX) Server Survey
June 1st, 2019

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 Queried1,753,222   100.0%
Number of Servers that didn't respond320,52718.28%
    Server didn't open socket314,85817.96%
    Server didn't provide banner5,6690.32%
Server provided banner1,432,69581.72%
Server banner identifies software in use889,33650.73%

As indicated by the above table, of the 1,753,222 servers queried, only 889,336 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
Exim507,38957.05%
Postfix307,01034.52%
Sendmail36,0194.05%
MailEnable19,1092.15%
MDaemon7,7280.87%
Microsoft5,0470.57%
IMail1,4390.16%
CommuniGate Pro1,2880.14%
XMail8300.09%
Qmail Toaster7380.08%
Lotus Domino5380.06%
WinWebMail5370.06%
SurgeSMTP5310.06%
Kerio2580.03%
MagicMail1790.02%
Merak1760.02%
Post.Office1340.02%
ArGoSoft1160.01%
GroupWise770.01%
Gordano Messaging Suite (GMS)690.01%
Trend Micro500.01%
InterScan VirusWall180.00%
OpenVMS160.00%
VisNetic140.00%
Mercury60.00%
Mirapoint50.00%
WebSTAR V40.00%
Interscan30.00%
ModusMail20.00%
WebSTAR20.00%
MessageWall20.00%
Neon Mail Server20.00%

Detailed Breakdown of Revisions on a Per-Server Basis

Exim (507,389 servers)

Version Number of Servers Percent
4.91396,51278.15%
4.9222,0414.34%
4.8721,2234.18%
4.8918,6323.67%
4.8411,1762.20%
4.908,1901.61%
Other29,6155.84%

Postfix (307,010 servers)

Version Number of Servers Percent
Other307,010100.00%

Sendmail (36,019 servers)

Version Number of Servers Percent
8.15.212,09133.57%
8.14.47,07519.64%
8.13.83,98511.06%
8.14.52,9598.22%
8.14.72,8327.86%
8.13.12,5307.02%
8.14.91,4934.15%
8.14.37452.07%
Other2,3096.41%

MailEnable (19,109 servers)

Version Number of Servers Percent
10.12--4,41323.09%
9.00--1,4367.51%
9.16--1,3136.87%
8.60--4812.52%
10.20--4482.34%
8.53--3962.07%
6.5--3511.84%
8.60-8.60-2981.56%
8.51--2981.56%
10.23--2701.41%
10.18--2421.27%
10.16--2411.26%
8.04--2261.18%
1.986--2121.11%
10.19--2051.07%
9.00--9.001951.02%
Other8,08442.30%

MDaemon (7,728 servers)

Version Number of Servers Percent
19.0.05537.16%
13.5.14846.26%
13.6.34085.28%
18.5.33514.54%
13.0.43214.15%
13.0.53043.93%
11.0.32963.83%
11.0.02903.75%
16.5.22493.22%
18.5.22403.11%
18.5.12122.74%
12.5.41692.19%
12.5.61672.16%
14.5.21421.84%
19.0.11281.66%
15.0.31121.45%
18.0.21121.45%
16.0.41091.41%
10.1.21091.41%
10.0.01051.36%
10.1.0931.20%
16.5.1821.06%
13.0.2781.01%
Other2,61433.83%

Microsoft (5,047 servers)

Version Number of Servers Percent
6.0.3790.46752,40747.69%
7.5.7601.1751465512.98%
8.5.9600.1638464612.80%
6.0.3790.39593046.02%
10.0.14393.26081983.92%
8.0.9200.163841422.81%
5.0.2195.53291292.56%
7.0.6002.18264831.64%
6.0.3790.1830831.64%
5.0.2195.6713631.25%
10.0.14393.0511.01%
Other2865.67%

IMail (1,439 servers)

Version Number of Servers Percent
12.5.6.10122415.57%
12.4.1.151369.45%
8.221198.27%
12.5.5.115896.18%
12.5.3.93855.91%
9.23845.84%
12.5.7.59785.42%
12.5.4.146725.00%
12.3.0.100714.93%
8.15573.96%
11.03432.99%
12.5.7.58432.99%
8.05432.99%
12.5.5.117241.67%
10.02211.46%
11.5201.39%
7.07181.25%
8.00151.04%
10.01151.04%
7.15151.04%
Other16711.61%

CommuniGate Pro (1,288 servers)

Version Number of Servers Percent
6.2.121138.77%
6.1.16544.19%
6.0.11493.80%
5.4.11443.42%
6.2.10403.11%
6.1.18393.03%
5.2.20362.80%
5.3.13362.80%
6.1.20322.48%
5.1.16302.33%
6.1.11272.10%
6.2.7262.02%
6.0.9251.94%
6.2.11251.94%
6.1.10241.86%
5.2.3201.55%
6.2.1201.55%
6.1.2191.48%
6.2.9191.48%
4.1.8171.32%
6.2.4171.32%
6.1.19161.24%
6.1.5161.24%
6.1.13161.24%
6.2.8151.16%
6.1.12151.16%
6.1.17151.16%
6.2.5141.09%
6.1.15141.09%
6.1.14141.09%
6.1.9141.09%
4.2.10131.01%
5.3.15131.01%
Other40131.13%

XMail (830 servers)

Version Number of Servers Percent
1.2739847.95%
1.2226131.45%
1.26526.27%
1.25475.66%
1.24323.86%
1.2191.08%
Other313.73%

Qmail Toaster (738 servers)

Version Number of Servers Percent
1.358779.54%
1.0312316.67%
1.03.5111.49%
1.03.691.22%
Other81.08%

Lotus Domino (538 servers)

Version Number of Servers Percent
8.5.3FP611120.63%
8.5.37914.68%
8.5.2254.65%
7.0.2213.90%
8.5203.72%
8.5.1183.35%
8.5.3FP3142.60%
8.5.3FP2142.60%
8.5.3FP1122.23%
7.0122.23%
7.0.3112.04%
8.5.2FP2112.04%
8.0.1101.86%
8.0101.86%
8.5.3FP4101.86%
8.5.2FP491.67%
8.5.2FP391.67%
8.5.1FP571.30%
7.0.471.30%
6.5.471.30%
6.561.12%
8.5.2FP4HF75961.12%
8.5.3FP561.12%
6.5.561.12%
7.0.161.12%
Other9116.91%

WinWebMail (537 servers)

Version Number of Servers Percent
3.9.0.79116.95%
4.2.0.18916.57%
3.8.1.35710.61%
3.9.0.1376.89%
3.8.0.1285.21%
3.7.6.1264.84%
3.8.1.5234.28%
4.1.0.1213.91%
4.0.0.1193.54%
3.7.3.1142.61%
3.8.5.1132.42%
3.9.2.1122.23%
3.8.6.1122.23%
3.8.1.1122.23%
3.7.7.3112.05%
3.9.3.1101.86%
3.8.3.191.68%
3.9.5.381.49%
3.8.2.171.30%
3.7.0.561.12%
Other325.96%

SurgeSMTP (531 servers)

Version Number of Servers Percent
7.3o4-413024.48%
7.3e2-27614.31%
7.1e-1366.78%
7.3i2-2356.59%
6.5a2-2244.52%
6.7c-1193.58%
6.9c-1193.58%
7.2i-1152.82%
7.2a-1152.82%
3.9e-1132.45%
7.3o2-2122.26%
7.0c2-2122.26%
6.5a-1101.88%
7.2e-291.69%
5.2a-171.32%
6.4a-171.32%
6.1c-161.13%
4.0u4-461.13%
Other8015.07%

Kerio (258 servers)

Version Number of Servers Percent
6.7.36123.64%
6.7.03413.18%
6.6.2259.69%
6.7.2249.30%
6.5.2238.91%
6.5.0124.65%
6.4.1114.26%
6.7.1103.88%
6.6.1103.88%
6.3.183.10%
6.4.072.71%
6.6.062.33%
6.5.141.55%
6.3.041.55%
6.1.331.16%
5.7.931.16%
Other135.04%

MagicMail (179 servers)

Version Number of Servers Percent
Other179100.00%

Merak (176 servers)

Version Number of Servers Percent
8.0.34324.43%
8.9.13821.59%
8.5.0137.39%
7.4.5105.68%
7.6.1105.68%
7.5.284.55%
9.0.373.98%
8.3.863.41%
7.6.442.27%
7.4.242.27%
7.2.042.27%
6.0.831.70%
7.0.131.70%
7.6.031.70%
4.4.121.14%
Other1810.23%

Post.Office (134 servers)

Version Number of Servers Percent
4.33425.37%
4.2.22518.66%
4.41712.69%
4.1.2.4139.70%
3.5.396.72%
4.2.1.364.48%
4.1.142.99%
3.5.3J32.24%
3.5.132.24%
3.8.7.421.49%
4.0.121.49%
3.9.221.49%
4.2.1.121.49%
3.9.2.321.49%
Other107.46%

ArGoSoft (116 servers)

Version Number of Servers Percent
1.8 (1.8.9.6)4337.07%
1.8 (1.8.9.3)1613.79%
1.8 (1.8.9.5)1512.93%
1.8 (1.8.9.1)1210.34%
1.8 (1.8.7.3)43.45%
1.8 (1.8.8.8)32.59%
1.8 (1.8.9.2)32.59%
1.8 (1.8.6.0)21.72%
1.8 (1.8.5.8)21.72%
1.8 (1.8.8.7)21.72%
1.8 (1.8.8.9)21.72%
1.8 (1.8.7.6)21.72%
Other108.62%

GroupWise (77 servers)

Version Number of Servers Percent
14.2.21114.29%
18.1.01012.99%
18.0.2911.69%
14.2.379.09%
14.2.156.49%
18.1.145.19%
14.2.045.19%
7.0.333.90%
6.5.733.90%
18.0.122.60%
14.0.022.60%
18.0.022.60%
14.0.122.60%
7.0.222.60%
8.0.322.60%
6.0.211.30%
6.5.411.30%
6.5.611.30%
6.5.511.30%
7.0.111.30%
12.0.111.30%
6.5.011.30%
7.0.411.30%
6.0.411.30%
Other00.00%

Gordano Messaging Suite (GMS) (69 servers)

Version Number of Servers Percent
Other69100.00%

Trend Micro (50 servers)

Version Number of Servers Percent
5.71428.00%
5.181224.00%
5.5714.00%
7.0714.00%
7.5510.00%
8.512.00%
7.5ready12.00%
812.00%
9.012.00%
7.112.00%
Other00.00%

InterScan VirusWall (18 servers)

Version Number of Servers Percent
Other18100.00%

OpenVMS (16 servers)

Version Number of Servers Percent
8.4956.25%
7.3425.00%
8.3212.50%
8.216.25%
Other00.00%

VisNetic (14 servers)

Version Number of Servers Percent
9.3.2.0857.14%
5.5.8.3214.29%
8.0.317.14%
5.0.2.317.14%
9.1.4.017.14%
6.2.2.017.14%
Other00.00%

Mercury (6 servers)

Version Number of Servers Percent
3.32350.00%
1.48350.00%
Other00.00%

Mirapoint (5 servers)

Version Number of Servers Percent
4.3.6-GA120.00%
3.10.10a-GA120.00%
4.3.5-GA120.00%
4.4.5-GA120.00%
4.4.6-GA120.00%
Other00.00%

WebSTAR V (4 servers)

Version Number of Servers Percent
5.4.1375.00%
5.3.2125.00%
Other00.00%

Interscan (3 servers)

Version Number of Servers Percent
3.81-Build_1022266.67%
3.8-Build_3013133.33%
Other00.00%

ModusMail (2 servers)

Version Number of Servers Percent
4.1.361.212100.00%
Other00.00%

WebSTAR (2 servers)

Version Number of Servers Percent
Other2100.00%

MessageWall (2 servers)

Version Number of Servers Percent
1.0.82100.00%
Other00.00%

Neon Mail Server (2 servers)

Version Number of Servers Percent
3.1.0150.00%
3.1.2150.00%
Other00.00%




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