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You are viewing an outdated report. The latest version of this report was published on September 1st, 2022


    
Mail (MX) Server Survey
June 1st, 2022

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 Queried788,219   100.0%
Number of Servers that didn't respond117,93614.96%
    Server didn't open socket116,03114.72%
    Server didn't provide banner1,9050.24%
Server provided banner670,28385.04%
Server banner identifies software in use442,61256.15%

As indicated by the above table, of the 788,219 servers queried, only 442,612 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
Exim263,74359.59%
Postfix148,91233.64%
Sendmail15,7213.55%
MailEnable8,5531.93%
MDaemon2,0130.45%
Microsoft1,0330.23%
CommuniGate Pro5030.11%
Qmail Toaster4110.09%
IMail3610.08%
XMail3020.07%
OpenSMTPD2730.06%
SurgeSMTP2390.05%
MagicMail1020.02%
WinWebMail1000.02%
Lotus Domino980.02%
Kerio520.01%
Post.Office520.01%
Merak510.01%
ArGoSoft280.01%
GroupWise230.01%
Gordano Messaging Suite (GMS)130.00%
Trend Micro80.00%
OpenVMS80.00%
VisNetic40.00%
ModusMail20.00%
Neon Mail Server10.00%
Interscan10.00%
Mercury10.00%
WebSTAR V10.00%
WebSTAR10.00%
Mirapoint10.00%
InterScan VirusWall10.00%

Detailed Breakdown of Revisions on a Per-Server Basis

Exim (263,743 servers)

Version Number of Servers Percent
4.95109,34141.46%
4.94.2109,13341.38%
4.9317,0866.48%
4.924,2521.61%
4.943,9541.50%
4.912,9001.10%
Other17,0776.47%

Postfix (148,912 servers)

Version Number of Servers Percent
Other148,912100.00%

Sendmail (15,721 servers)

Version Number of Servers Percent
8.15.28,78355.87%
8.14.41,78711.37%
8.14.71,74211.08%
8.13.87985.08%
8.14.56684.25%
8.16.14773.03%
8.14.92781.77%
8.13.12441.55%
8.17.12041.30%
8.14.31671.06%
Other5733.64%

MailEnable (8,553 servers)

Version Number of Servers Percent
10.34--3,53341.31%
10.27--5136.00%
10.25--3914.57%
10.37--2162.53%
9.00--2032.37%
10.31-10.31-1381.61%
10.31--1261.47%
10.37--10.371061.24%
10.37-10.37-1001.17%
9.00--9.00971.13%
10.39--951.11%
10.39--10.39921.08%
Other2,94334.41%

MDaemon (2,013 servers)

Version Number of Servers Percent
21.5.235417.59%
13.5.11135.61%
13.0.5803.97%
21.5.1743.68%
19.5.4723.58%
11.0.0693.43%
11.0.3653.23%
13.0.4582.88%
16.5.2572.83%
21.0.3502.48%
19.5.5502.48%
12.5.6412.04%
21.0.1391.94%
14.5.2391.94%
21.5.0351.74%
21.0.2341.69%
10.0.0271.34%
9.6.6241.19%
10.1.2241.19%
16.0.4231.14%
15.0.3231.14%
12.5.4221.09%
Other64031.79%

Microsoft (1,033 servers)

Version Number of Servers Percent
6.0.3790.467532131.07%
8.5.9600.1638416716.17%
10.0.14393.416911310.94%
10.0.17763.1697908.71%
7.5.7601.17514827.94%
6.0.3790.3959585.61%
5.0.2195.5329434.16%
8.0.9200.16384272.61%
5.0.2195.6713181.74%
6.0.3790.1830131.26%
Other1019.78%

CommuniGate Pro (503 servers)

Version Number of Servers Percent
6.2.156011.93%
6.2.14499.74%
6.3.11224.37%
6.1.20214.17%
6.1.16173.38%
5.2.20132.58%
6.0.11122.39%
6.3.10122.39%
6.2.12122.39%
5.4.11101.99%
6.1.18101.99%
5.1.16101.99%
7.1.191.79%
6.3.691.79%
6.2.1071.39%
6.2.771.39%
6.0.971.39%
5.2.1361.19%
6.2.861.19%
6.3.961.19%
Other19839.36%

Qmail Toaster (411 servers)

Version Number of Servers Percent
1.331275.91%
1.039021.90%
1.03.551.22%
Other40.97%

IMail (361 servers)

Version Number of Servers Percent
12.5.8.414713.02%
12.5.6.101359.70%
12.5.7.59349.42%
12.5.8.58318.59%
9.23267.20%
12.5.3.93174.71%
8.05164.43%
8.22143.88%
12.5.6.105143.88%
12.5.8.59133.60%
8.15133.60%
12.5.5.115123.32%
12.5.8.54113.05%
12.3.0.100102.77%
12.4.1.1582.22%
10.0282.22%
12.5.4.14661.66%
12.5.5.11751.39%
7.0741.11%
11.541.11%
Other339.14%

XMail (302 servers)

Version Number of Servers Percent
1.2716755.30%
1.229130.13%
1.26134.30%
1.25123.97%
1.2461.99%
1.1551.66%
Other82.65%

OpenSMTPD (273 servers)

Version Number of Servers Percent
Other273100.00%

SurgeSMTP (239 servers)

Version Number of Servers Percent
7.3o4-43012.55%
7.6j-12711.30%
7.5c-1187.53%
7.6h-2156.28%
7.5a-1145.86%
7.3e2-2125.02%
7.6m-1104.18%
7.4o-1104.18%
7.6d-193.77%
7.4e-172.93%
7.1e-172.93%
6.7c-172.93%
6.5a2-262.51%
3.9e-141.67%
6.9c-141.67%
7.2i-141.67%
7.3i2-241.67%
7.2a-131.26%
3.8k2-231.26%
7.6n-731.26%
Other4217.57%

MagicMail (102 servers)

Version Number of Servers Percent
Other102100.00%

WinWebMail (100 servers)

Version Number of Servers Percent
4.2.0.12121.00%
3.9.0.71515.00%
4.4.0.11515.00%
4.3.0.166.00%
3.8.6.155.00%
3.8.0.155.00%
3.8.1.355.00%
3.8.5.144.00%
1.033.00%
3.7.3.133.00%
4.0.0.133.00%
4.1.0.122.00%
3.7.7.322.00%
3.9.0.122.00%
3.7.5.122.00%
3.8.1.522.00%
3.8.3.111.00%
3.7.6.211.00%
3.8.1.111.00%
3.8.1.611.00%
3.9.2.211.00%
Other00.00%

Lotus Domino (98 servers)

Version Number of Servers Percent
8.5.3FP61818.37%
8.5.31717.35%
7.066.12%
8.5.2FP266.12%
8.5.144.08%
7.0.244.08%
7.0.344.08%
5.0.833.06%
8.5.3FP433.06%
8.5.3FP133.06%
8.5.1FP422.04%
8.5.3FP322.04%
8.5.1FP522.04%
8.5.222.04%
8.5.2FP122.04%
8.5.3FP522.04%
6.5.311.02%
7.0.3FP111.02%
8.5.3FP211.02%
7.0.4FP211.02%
8.011.02%
5.0.1111.02%
7.0.4FP111.02%
5.0.1311.02%
8.0.111.02%
5.0.4a11.02%
8.5.2FP311.02%
8.5.3FP6HF121511.02%
8.5.2FP411.02%
5.0.13a11.02%
6.511.02%
6.0.111.02%
6.5.111.02%
8.511.02%
Other00.00%

Kerio (52 servers)

Version Number of Servers Percent
6.7.31325.00%
6.6.1713.46%
6.7.1611.54%
6.7.059.62%
6.5.247.69%
6.6.247.69%
6.4.123.85%
6.3.023.85%
5.7.923.85%
6.5.123.85%
6.0.1011.92%
6.3.111.92%
6.0.811.92%
6.5.011.92%
6.7.211.92%
Other00.00%

Post.Office (52 servers)

Version Number of Servers Percent
4.41732.69%
4.2.21019.23%
4.3917.31%
3.5.347.69%
4.1.2.435.77%
3.9.223.85%
4.223.85%
4.2.1.123.85%
3.5.3J11.92%
4.111.92%
3.1.211.92%
Other00.00%

Merak (51 servers)

Version Number of Servers Percent
8.9.11427.45%
8.0.31223.53%
7.6.1713.73%
7.4.535.88%
8.3.835.88%
8.5.023.92%
6.1.011.96%
8.0.111.96%
8.3.611.96%
8.9.211.96%
9.0.311.96%
4.2.111.96%
8.9.711.96%
7.6.011.96%
8.9.011.96%
5.8.211.96%
Other00.00%

ArGoSoft (28 servers)

Version Number of Servers Percent
1.8 (1.8.9.6)517.86%
1.8 (1.8.9.3)414.29%
1.8 (1.8.9.5)310.71%
1.8 (1.8.9.2)27.14%
1.8 (1.8.2.1)27.14%
1.8 (1.8.8.7)27.14%
1.8 (1.8.9.4)13.57%
1.8 (1.8.9.1)13.57%
1.8 (1.8.8.4)13.57%
1.8 (1.8.7.6)13.57%
1.8 (1.8.5.8)13.57%
1.8 (1.8.8.8)13.57%
1.8 (1.8.8.9)13.57%
1.8 (1.8.7.3)13.57%
1.8 (1.8.6.1)13.57%
1.8 (1.8.2.5)13.57%
Other00.00%

GroupWise (23 servers)

Version Number of Servers Percent
18.4.0417.39%
18.1.1313.04%
18.3.1313.04%
18.2.1313.04%
14.2.128.70%
14.2.228.70%
6.5.714.35%
18.0.014.35%
8.0.314.35%
14.0.014.35%
18.2.014.35%
18.0.214.35%
Other00.00%

Gordano Messaging Suite (GMS) (13 servers)

Version Number of Servers Percent
Other13100.00%

Trend Micro (8 servers)

Version Number of Servers Percent
5.18450.00%
5.7337.50%
5.5112.50%
Other00.00%

OpenVMS (8 servers)

Version Number of Servers Percent
8.4562.50%
7.3225.00%
8.2112.50%
Other00.00%

VisNetic (4 servers)

Version Number of Servers Percent
9.3.2.0250.00%
8.0.3125.00%
5.0.1125.00%
Other00.00%

ModusMail (2 servers)

Version Number of Servers Percent
4.1.361.212100.00%
Other00.00%

Neon Mail Server (1 servers)

Version Number of Servers Percent
3.1.21100.00%
Other00.00%

Interscan (1 servers)

Version Number of Servers Percent
3.8-Build_30131100.00%
Other00.00%

Mercury (1 servers)

Version Number of Servers Percent
1.481100.00%
Other00.00%

WebSTAR V (1 servers)

Version Number of Servers Percent
5.4.11100.00%
Other00.00%

WebSTAR (1 servers)

Version Number of Servers Percent
Other1100.00%

Mirapoint (1 servers)

Version Number of Servers Percent
4.4.5-GA1100.00%
Other00.00%

InterScan VirusWall (1 servers)

Version Number of Servers Percent
Other1100.00%




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