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You are viewing an outdated report.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


    
Mail (MX) Server Survey
October 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 Queried1,732,079   100.0%
Number of Servers that didn't respond313,60818.11%
    Server didn't open socket308,00817.78%
    Server didn't provide banner5,6000.32%
Server provided banner1,418,47181.89%
Server banner identifies software in use879,02050.75%

As indicated by the above table, of the 1,732,079 servers queried, only 879,020 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
Exim499,99256.88%
Postfix306,90734.91%
Sendmail34,5513.93%
MailEnable18,8272.14%
MDaemon7,4150.84%
Microsoft4,6100.52%
IMail1,3680.16%
CommuniGate Pro1,2470.14%
XMail7990.09%
Qmail Toaster7260.08%
SurgeSMTP5250.06%
Lotus Domino5050.06%
WinWebMail4930.06%
Kerio2360.03%
MagicMail1780.02%
Merak1570.02%
Post.Office1320.02%
ArGoSoft1070.01%
GroupWise750.01%
Gordano Messaging Suite (GMS)690.01%
Trend Micro430.00%
OpenVMS140.00%
InterScan VirusWall110.00%
VisNetic110.00%
Mercury60.00%
Interscan40.00%
Mirapoint40.00%
WebSTAR V30.00%
ModusMail20.00%
MessageWall20.00%
WebSTAR10.00%

Detailed Breakdown of Revisions on a Per-Server Basis

Exim (499,992 servers)

Version Number of Servers Percent
4.92371,84374.37%
4.9149,6329.93%
4.8712,9632.59%
4.8910,3112.06%
4.92.19,7541.95%
4.92.27,7201.54%
4.847,5201.50%
4.905,5841.12%
Other24,6654.93%

Postfix (306,907 servers)

Version Number of Servers Percent
Other306,907100.00%

Sendmail (34,551 servers)

Version Number of Servers Percent
8.15.212,36835.80%
8.14.46,58819.07%
8.13.83,46610.03%
8.14.72,9218.45%
8.14.52,6977.81%
8.13.12,2736.58%
8.14.91,4134.09%
8.14.36952.01%
Other2,1306.16%

MailEnable (18,827 servers)

Version Number of Servers Percent
10.12--5,95431.62%
9.00--1,1586.15%
9.16--5973.17%
10.25--3992.12%
8.60--3872.06%
10.20--3691.96%
8.53--2921.55%
6.5--2881.53%
8.60-8.60-2621.39%
10.25-10.25-2601.38%
10.25--10.252591.38%
10.23--2411.28%
8.51--2381.26%
10.16--2021.07%
9.00--9.001971.05%
10.18--1941.03%
Other7,53040.00%

MDaemon (7,415 servers)

Version Number of Servers Percent
19.0.383211.22%
13.5.14866.55%
13.6.34035.43%
13.0.43104.18%
13.0.52994.03%
11.0.02793.76%
11.0.32733.68%
16.5.22253.03%
19.0.21682.27%
12.5.41612.17%
12.5.61572.12%
14.5.21552.09%
18.5.31451.96%
18.5.11361.83%
19.0.11211.63%
18.5.21161.56%
10.1.21011.36%
15.0.3981.32%
19.0.0981.32%
10.0.0951.28%
16.0.4921.24%
18.0.2811.09%
10.1.0761.02%
Other2,50833.82%

Microsoft (4,610 servers)

Version Number of Servers Percent
6.0.3790.46752,10545.66%
8.5.9600.1638461113.25%
7.5.7601.1751457612.49%
6.0.3790.39592695.84%
10.0.14393.26082365.12%
8.0.9200.163841393.02%
5.0.2195.53291342.91%
7.0.6002.18264771.67%
6.0.3790.1830771.67%
5.0.2195.6713601.30%
5.0.2195.7381481.04%
Other2786.03%

IMail (1,368 servers)

Version Number of Servers Percent
12.5.6.10118713.67%
12.5.7.5916311.92%
12.4.1.151249.06%
8.221148.33%
12.5.5.115815.92%
9.23795.77%
12.5.3.93765.56%
12.3.0.100614.46%
8.15513.73%
12.5.4.146463.36%
8.05433.14%
11.03372.70%
12.5.7.58352.56%
10.02221.61%
12.5.5.117211.54%
11.5171.24%
12.5.6.105171.24%
7.15161.17%
10.01141.02%
Other16411.99%

CommuniGate Pro (1,247 servers)

Version Number of Servers Percent
6.2.12866.90%
6.1.16534.25%
6.2.13493.93%
6.0.11463.69%
6.2.14453.61%
5.4.11423.37%
5.3.13352.81%
5.2.20332.65%
6.1.20322.57%
6.1.18292.33%
6.2.10282.25%
5.1.16262.09%
6.0.9252.00%
6.1.11241.92%
6.1.2221.76%
6.1.10211.68%
5.2.3201.60%
6.2.7201.60%
6.2.9191.52%
6.1.12171.36%
6.2.1171.36%
6.2.4151.20%
4.1.8151.20%
6.1.14151.20%
6.1.19141.12%
6.1.15141.12%
6.1.13141.12%
4.2.10141.12%
6.2.11131.04%
6.1.9131.04%
6.1.5131.04%
Other41833.52%

XMail (799 servers)

Version Number of Servers Percent
1.2739649.56%
1.2224931.16%
1.25465.76%
1.26455.63%
1.24283.50%
1.2181.00%
Other273.38%

Qmail Toaster (726 servers)

Version Number of Servers Percent
1.356277.41%
1.0313819.01%
1.03.5111.52%
1.03.681.10%
Other70.96%

SurgeSMTP (525 servers)

Version Number of Servers Percent
7.3o4-416030.48%
7.3e2-26712.76%
7.1e-1336.29%
7.3i2-2264.95%
6.5a2-2254.76%
6.7c-1183.43%
6.9c-1173.24%
7.2i-1163.05%
7.0c2-2152.86%
7.2a-1142.67%
3.9e-1112.10%
6.5a-1101.90%
7.2e-271.33%
4.0u4-471.33%
6.1c-161.14%
5.2a-161.14%
Other8716.57%

Lotus Domino (505 servers)

Version Number of Servers Percent
8.5.3FP610420.59%
8.5.37214.26%
8.5.2265.15%
8.5193.76%
8.5.1193.76%
7.0.2173.37%
8.5.3FP1132.57%
8.5.3FP3132.57%
8.5.3FP2132.57%
7.0122.38%
8.0.1112.18%
8.5.2FP2112.18%
7.0.391.78%
8.5.1FP581.58%
8.5.3FP481.58%
8.5.2FP481.58%
8.5.2FP381.58%
8.071.39%
7.0.3FP161.19%
8.5.2FP4HF75961.19%
8.5.3FP561.19%
8.0.261.19%
Other10320.40%

WinWebMail (493 servers)

Version Number of Servers Percent
4.2.0.18617.44%
3.9.0.77415.01%
3.8.1.35310.75%
3.9.0.1377.51%
3.8.0.1275.48%
3.7.6.1244.87%
4.0.0.1173.45%
4.1.0.1173.45%
3.8.1.5163.25%
3.8.2.1163.25%
3.8.1.1132.64%
3.9.2.1132.64%
3.8.5.1122.43%
3.8.3.1102.03%
3.7.3.1102.03%
3.7.7.391.83%
3.9.3.191.83%
3.8.6.181.62%
3.9.5.371.42%
3.7.1.151.01%
Other306.09%

Kerio (236 servers)

Version Number of Servers Percent
6.7.35925.00%
6.7.03113.14%
6.6.2218.90%
6.7.2218.90%
6.5.2208.47%
6.5.0114.66%
6.6.1104.24%
6.7.193.81%
6.3.193.81%
6.4.193.81%
6.4.052.12%
6.6.052.12%
6.1.052.12%
6.3.031.27%
6.1.331.27%
6.5.131.27%
5.7.931.27%
Other93.81%

MagicMail (178 servers)

Version Number of Servers Percent
Other178100.00%

Merak (157 servers)

Version Number of Servers Percent
8.0.33924.84%
8.9.13622.93%
8.5.0106.37%
7.6.1106.37%
7.4.595.73%
9.0.374.46%
8.3.874.46%
7.6.442.55%
7.5.242.55%
6.0.831.91%
7.0.131.91%
7.6.031.91%
7.4.221.27%
Other2012.74%

Post.Office (132 servers)

Version Number of Servers Percent
4.33526.52%
4.2.22518.94%
4.41712.88%
4.1.2.4139.85%
3.5.386.06%
3.5.3J43.03%
4.2.1.343.03%
4.1.132.27%
4.2.1.132.27%
3.5.132.27%
4.0.121.52%
3.9.221.52%
3.8.7.421.52%
Other118.33%

ArGoSoft (107 servers)

Version Number of Servers Percent
1.8 (1.8.9.6)3633.64%
1.8 (1.8.9.5)1614.95%
1.8 (1.8.9.3)1614.95%
1.8 (1.8.9.1)76.54%
1.8 (1.8.7.3)43.74%
1.8 (1.8.8.8)32.80%
1.8 (1.8.6.0)32.80%
1.8 (1.8.7.6)32.80%
1.8 (1.8.9.2)21.87%
1.8 (1.8.5.8)21.87%
1.8 (1.8.8.7)21.87%
1.8 (1.8.8.4)21.87%
1.8 (1.8.8.9)21.87%
Other98.41%

GroupWise (75 servers)

Version Number of Servers Percent
18.1.11114.67%
14.2.2912.00%
18.1.079.33%
18.0.279.33%
14.2.368.00%
14.2.156.67%
14.2.045.33%
14.0.034.00%
18.0.134.00%
6.5.722.67%
18.0.022.67%
14.0.122.67%
8.0.322.67%
6.5.411.33%
6.0.211.33%
7.0.211.33%
7.0.311.33%
6.5.211.33%
6.5.511.33%
6.5.611.33%
7.0.111.33%
12.0.111.33%
7.0.411.33%
6.5.011.33%
6.0.411.33%
Other00.00%

Gordano Messaging Suite (GMS) (69 servers)

Version Number of Servers Percent
Other69100.00%

Trend Micro (43 servers)

Version Number of Servers Percent
5.71330.23%
5.181125.58%
5.5613.95%
7.0511.63%
7.549.30%
7.5ready12.33%
812.33%
9.012.33%
7.112.33%
Other00.00%

OpenVMS (14 servers)

Version Number of Servers Percent
8.4750.00%
7.3428.57%
8.3214.29%
8.217.14%
Other00.00%

InterScan VirusWall (11 servers)

Version Number of Servers Percent
Other11100.00%

VisNetic (11 servers)

Version Number of Servers Percent
9.3.2.0872.73%
8.0.319.09%
9.1.4.019.09%
5.5.8.319.09%
Other00.00%

Mercury (6 servers)

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

Interscan (4 servers)

Version Number of Servers Percent
3.81-Build_1022250.00%
3.8-Build_3013125.00%
3.8-Build_1080125.00%
Other00.00%

Mirapoint (4 servers)

Version Number of Servers Percent
4.3.6-GA125.00%
3.10.10a-GA125.00%
4.4.5-GA125.00%
4.4.6-GA125.00%
Other00.00%

WebSTAR V (3 servers)

Version Number of Servers Percent
5.4.13100.00%
Other00.00%

ModusMail (2 servers)

Version Number of Servers Percent
4.1.361.212100.00%
Other00.00%

MessageWall (2 servers)

Version Number of Servers Percent
1.0.82100.00%
Other00.00%

WebSTAR (1 servers)

Version Number of Servers Percent
Other1100.00%




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