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You are viewing an outdated report.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


    
Mail (MX) Server Survey
March 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 Queried1,775,266   100.0%
Number of Servers that didn't respond316,55417.83%
    Server didn't open socket310,73717.50%
    Server didn't provide banner5,8170.33%
Server provided banner1,458,71282.17%
Server banner identifies software in use905,69151.02%

As indicated by the above table, of the 1,775,266 servers queried, only 905,691 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
Exim515,96356.97%
Postfix311,55934.40%
Sendmail37,6164.15%
MailEnable19,5782.16%
MDaemon8,1730.90%
Microsoft5,4260.60%
IMail1,5660.17%
CommuniGate Pro1,3120.14%
XMail8510.09%
Qmail Toaster7540.08%
Lotus Domino5720.06%
WinWebMail5660.06%
SurgeSMTP5510.06%
Kerio2860.03%
Merak1860.02%
MagicMail1780.02%
Post.Office1310.01%
ArGoSoft1280.01%
GroupWise830.01%
Gordano Messaging Suite (GMS)740.01%
Trend Micro510.01%
InterScan VirusWall190.00%
OpenVMS170.00%
VisNetic160.00%
Mirapoint100.00%
Mercury60.00%
Neon Mail Server50.00%
Interscan50.00%
WebSTAR V30.00%
WebSTAR20.00%
MessageWall20.00%
ModusMail20.00%

Detailed Breakdown of Revisions on a Per-Server Basis

Exim (515,963 servers)

Version Number of Servers Percent
4.91411,42279.74%
4.8725,2394.89%
4.8924,7214.79%
4.8412,0552.34%
4.909,3571.81%
Other33,1696.43%

Postfix (311,559 servers)

Version Number of Servers Percent
Other311,559100.00%

Sendmail (37,616 servers)

Version Number of Servers Percent
8.15.211,88531.60%
8.14.47,62620.27%
8.13.84,54012.07%
8.14.53,0288.05%
8.14.72,9917.95%
8.13.12,7047.19%
8.14.91,5524.13%
8.14.38382.23%
Other2,4526.52%

MailEnable (19,578 servers)

Version Number of Servers Percent
10.12--3,66318.71%
9.00--1,6448.40%
9.16--1,5708.02%
8.60--5722.92%
8.53--4772.44%
6.5--4162.12%
10.20--3821.95%
8.51--3461.77%
8.60-8.60-3221.64%
10.18--2731.39%
10.16--2701.38%
8.04--2671.36%
10.19--2651.35%
1.986--2411.23%
9.75--2231.14%
10.20--10.202221.13%
9.00--9.002081.06%
Other8,21741.97%

MDaemon (8,173 servers)

Version Number of Servers Percent
18.5.11,12613.78%
13.5.14785.85%
13.6.34064.97%
13.0.43374.12%
13.0.53193.90%
11.0.33143.84%
11.0.03133.83%
16.5.23103.79%
18.0.22182.67%
18.5.01992.43%
12.5.41872.29%
12.5.61752.14%
14.5.21551.90%
16.0.41411.73%
15.0.31291.58%
10.1.21231.50%
10.0.01191.46%
17.5.31091.33%
17.5.21061.30%
10.1.01011.24%
16.5.1941.15%
13.0.2861.05%
Other2,62832.15%

Microsoft (5,426 servers)

Version Number of Servers Percent
6.0.3790.46752,68249.43%
7.5.7601.1751469712.85%
8.5.9600.1638466612.27%
6.0.3790.39593215.92%
10.0.14393.26081592.93%
8.0.9200.163841542.84%
5.0.2195.53291312.41%
7.0.6002.18264901.66%
6.0.3790.1830881.62%
10.0.14393.0781.44%
5.0.2195.6713661.22%
Other2945.42%

IMail (1,566 servers)

Version Number of Servers Percent
12.5.6.10133821.58%
8.221499.51%
12.4.1.151469.32%
12.5.5.115976.19%
12.5.3.93925.87%
12.5.4.146915.81%
9.23875.56%
12.3.0.100774.92%
8.15704.47%
11.03483.07%
8.05452.87%
12.5.5.117221.40%
11.5211.34%
10.02201.28%
7.07181.15%
10.01171.09%
7.15161.02%
Other21213.54%

CommuniGate Pro (1,312 servers)

Version Number of Servers Percent
6.2.10685.18%
6.1.16544.12%
6.0.11534.04%
5.4.11473.58%
6.1.18403.05%
6.2.11392.97%
5.3.13362.74%
6.2.7362.74%
5.2.20362.74%
5.1.16352.67%
6.2.9282.13%
6.1.11282.13%
6.0.9272.06%
6.1.20251.91%
5.2.3251.91%
6.1.10251.91%
6.1.2231.75%
6.2.1231.75%
6.1.19231.75%
6.2.4201.52%
6.1.15191.45%
6.2.8171.30%
6.1.13171.30%
6.1.12161.22%
6.1.17161.22%
6.1.14161.22%
4.1.8161.22%
6.1.5151.14%
6.1.9141.07%
Other47536.20%

XMail (851 servers)

Version Number of Servers Percent
1.2740847.94%
1.2226431.02%
1.26576.70%
1.25495.76%
1.24354.11%
1.21101.18%
Other283.29%

Qmail Toaster (754 servers)

Version Number of Servers Percent
1.360780.50%
1.0311915.78%
1.03.5101.33%
1.03.691.19%
Other91.19%

Lotus Domino (572 servers)

Version Number of Servers Percent
8.5.3FP611520.10%
8.5.38514.86%
8.5.2284.90%
7.0.2274.72%
8.5213.67%
8.5.1213.67%
8.5.3FP1162.80%
8.5.3FP2142.45%
8.5.3FP3132.27%
7.0122.10%
8.5.3FP4111.92%
8.5.2FP2111.92%
7.0.3111.92%
8.0101.75%
8.5.2FP4101.75%
8.5.2FP391.57%
8.5.1FP591.57%
8.0.191.57%
8.5.3FP581.40%
7.0.171.22%
6.571.22%
7.0.471.22%
6.5.561.05%
8.5.2FP4HF75961.05%
6.5.461.05%
Other9316.26%

WinWebMail (566 servers)

Version Number of Servers Percent
3.9.0.79717.14%
4.2.0.16711.84%
3.8.1.36611.66%
3.9.0.1417.24%
3.8.0.1356.18%
3.7.6.1274.77%
4.1.0.1234.06%
3.8.1.5213.71%
4.0.0.1183.18%
3.8.5.1173.00%
3.9.2.1142.47%
3.7.3.1142.47%
3.9.3.1132.30%
3.8.1.1132.30%
3.8.3.1122.12%
3.8.6.1122.12%
3.9.5.3111.94%
3.7.7.3111.94%
3.8.2.1101.77%
3.9.5.171.24%
3.7.1.161.06%
Other315.48%

SurgeSMTP (551 servers)

Version Number of Servers Percent
7.3o4-49417.06%
7.3e2-29016.33%
7.3i2-25910.71%
7.1e-1386.90%
6.5a2-2254.54%
7.2a-1203.63%
6.7c-1203.63%
6.9c-1193.45%
7.2i-1183.27%
7.0c2-2142.54%
7.3o2-2132.36%
3.9e-1132.36%
6.5a-1122.18%
7.2e-2112.00%
5.2a-181.45%
4.0u4-471.27%
6.4a-171.27%
6.1c-171.27%
Other7613.79%

Kerio (286 servers)

Version Number of Servers Percent
6.7.36322.03%
6.7.03813.29%
6.6.22910.14%
6.7.2279.44%
6.5.2279.44%
6.5.0134.55%
6.4.1124.20%
6.6.1124.20%
6.3.1103.50%
6.7.193.15%
6.4.072.45%
6.6.062.10%
6.5.151.75%
6.3.041.40%
6.1.331.05%
6.1.031.05%
5.7.931.05%
Other155.24%

Merak (186 servers)

Version Number of Servers Percent
8.0.34624.73%
8.9.13820.43%
8.5.0136.99%
7.4.5115.91%
7.6.1105.38%
8.3.8105.38%
7.6.484.30%
7.5.273.76%
9.0.373.76%
7.4.242.15%
6.0.831.61%
7.0.131.61%
7.2.031.61%
7.6.031.61%
4.4.121.08%
Other189.68%

MagicMail (178 servers)

Version Number of Servers Percent
Other178100.00%

Post.Office (131 servers)

Version Number of Servers Percent
4.33325.19%
4.2.22418.32%
4.1.2.41410.69%
4.4139.92%
3.5.3107.63%
4.2.1.364.58%
4.1.143.05%
3.5.132.29%
3.5.3J32.29%
4.2.1.132.29%
4.0.121.53%
3.9.221.53%
3.8.7.421.53%
3.9.2.321.53%
Other107.63%

ArGoSoft (128 servers)

Version Number of Servers Percent
1.8 (1.8.9.6)4736.72%
1.8 (1.8.9.3)1914.84%
1.8 (1.8.9.5)1713.28%
1.8 (1.8.9.1)1310.16%
1.8 (1.8.8.8)43.12%
1.8 (1.8.7.3)32.34%
1.8 (1.8.6.0)32.34%
1.8 (1.8.2.1)21.56%
1.8 (1.8.9.4)21.56%
1.8 (1.8.9.2)21.56%
1.8 (1.8.5.8)21.56%
1.8 (1.8.8.7)21.56%
1.8 (1.8.8.9)21.56%
1.8 (1.8.7.6)21.56%
Other86.25%

GroupWise (83 servers)

Version Number of Servers Percent
14.2.21518.07%
18.1.01214.46%
18.0.289.64%
14.2.367.23%
14.2.156.02%
14.2.056.02%
14.0.144.82%
6.5.733.61%
7.0.333.61%
7.0.222.41%
14.0.022.41%
18.0.122.41%
8.0.322.41%
6.0.422.41%
18.0.022.41%
7.0.411.20%
7.0.111.20%
8.0.011.20%
6.5.511.20%
6.5.011.20%
6.5.611.20%
6.5.411.20%
6.5.211.20%
6.0.211.20%
12.0.111.20%
Other00.00%

Gordano Messaging Suite (GMS) (74 servers)

Version Number of Servers Percent
Other74100.00%

Trend Micro (51 servers)

Version Number of Servers Percent
5.71427.45%
5.181223.53%
5.5815.69%
7.0713.73%
7.559.80%
8.511.96%
7.5ready11.96%
811.96%
9.011.96%
7.111.96%
Other00.00%

InterScan VirusWall (19 servers)

Version Number of Servers Percent
Other19100.00%

OpenVMS (17 servers)

Version Number of Servers Percent
8.4952.94%
7.3529.41%
8.3211.76%
8.215.88%
Other00.00%

VisNetic (16 servers)

Version Number of Servers Percent
9.3.2.0850.00%
5.5.8.3212.50%
8.0.316.25%
5.8.6.616.25%
5.0.2.316.25%
9.1.4.016.25%
5.0.2.016.25%
6.2.2.016.25%
Other00.00%

Mirapoint (10 servers)

Version Number of Servers Percent
4.4.2a-FCS220.00%
4.4.3-GA220.00%
4.1.9-GA110.00%
4.3.6-GA110.00%
3.10.10a-GA110.00%
4.3.5-GA110.00%
4.4.5-GA110.00%
4.4.6-GA110.00%
Other00.00%

Mercury (6 servers)

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

Neon Mail Server (5 servers)

Version Number of Servers Percent
3.1.3120.00%
3.0.7120.00%
3.1.0120.00%
3.1.2120.00%
3.0.8120.00%
Other00.00%

Interscan (5 servers)

Version Number of Servers Percent
3.81-Build_1022240.00%
3.81-Build_1084120.00%
3.8-Build_3013120.00%
3.8-Build_1080120.00%
Other00.00%

WebSTAR V (3 servers)

Version Number of Servers Percent
5.4.13100.00%
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%

ModusMail (2 servers)

Version Number of Servers Percent
4.1.361.212100.00%
Other00.00%




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