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You are viewing an outdated report. The latest version of this report was published on September 1st, 2018


    
Mail (MX) Server Survey
April 1st, 2018

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 Queried1,911,162   100.0%
Number of Servers that didn't respond335,64317.56%
    Server didn't open socket326,53617.09%
    Server didn't provide banner9,1070.48%
Server provided banner1,575,51982.44%
Server banner identifies software in use974,60351.00%

As indicated by the above table, of the 1,911,162 servers queried, only 974,603 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
Exim554,93756.94%
Postfix329,87933.85%
Sendmail42,2344.33%
MailEnable21,6882.23%
MDaemon10,1201.04%
Microsoft7,4790.77%
IMail1,8630.19%
CommuniGate Pro1,5660.16%
XMail9470.10%
Lotus Domino7680.08%
WinWebMail7350.08%
SurgeSMTP5500.06%
Qmail Toaster4580.05%
Kerio3710.04%
Merak2390.02%
ArGoSoft1680.02%
MagicMail1580.02%
Post.Office1410.01%
Gordano Messaging Suite (GMS)730.01%
GroupWise730.01%
Trend Micro620.01%
InterScan VirusWall240.00%
VisNetic210.00%
OpenVMS120.00%
Mirapoint80.00%
Mercury70.00%
Interscan60.00%
Neon Mail Server50.00%
WebSTAR V50.00%
MessageWall30.00%
WebSTAR20.00%
ModusMail10.00%

Detailed Breakdown of Revisions on a Per-Server Basis

Exim (554,937 servers)

Version Number of Servers Percent
4.89415,02174.79%
4.8744,1417.95%
4.9026,9594.86%
4.8416,4012.96%
4.806,8871.24%
4.866,2741.13%
4.855,5751.00%
Other33,6796.07%

Postfix (329,879 servers)

Version Number of Servers Percent
Other329,879100.00%

Sendmail (42,234 servers)

Version Number of Servers Percent
8.14.511,73527.79%
8.14.49,65722.87%
8.13.86,07814.39%
8.13.13,8199.04%
8.15.22,8656.78%
8.14.72,0434.84%
8.14.31,5603.69%
8.14.91,2562.97%
Other3,2217.63%

MailEnable (21,688 servers)

Version Number of Servers Percent
9.00--2,83113.05%
9.16--2,34010.79%
8.60--9404.33%
8.53--8443.89%
6.5--6723.10%
8.51--6002.77%
8.04--4311.99%
1.986--4241.95%
8.60-8.60-3861.78%
9.75--3771.74%
8.50--2751.27%
5.10--2491.15%
10.11--2421.12%
8.00--2281.05%
9.74--2181.01%
Other10,63149.02%

MDaemon (10,120 servers)

Version Number of Servers Percent
17.5.21,23612.21%
13.5.15635.56%
16.5.25175.11%
13.6.34914.85%
13.0.44104.05%
11.0.34023.97%
11.0.03963.91%
13.0.53903.85%
17.5.13203.16%
16.0.42542.51%
17.0.22312.28%
12.5.62152.12%
12.5.42042.02%
14.5.21951.93%
15.0.31821.80%
16.5.11731.71%
10.1.21561.54%
10.0.01551.53%
16.0.11211.20%
13.0.21071.06%
10.1.01061.05%
10.1.11061.05%
15.5.31051.04%
17.0.31021.01%
Other2,98329.48%

Microsoft (7,479 servers)

Version Number of Servers Percent
6.0.3790.46754,16555.69%
7.5.7601.1751495312.74%
8.5.9600.1638475510.09%
6.0.3790.39595016.70%
8.0.9200.163841842.46%
5.0.2195.53291481.98%
7.0.6002.182641311.75%
6.0.3790.18301251.67%
10.0.14393.01101.47%
Other4075.44%

IMail (1,863 servers)

Version Number of Servers Percent
12.5.5.11521011.27%
12.5.6.10120611.06%
8.2220210.84%
12.4.1.151538.21%
9.231226.55%
12.5.3.931156.17%
12.5.4.1461015.42%
12.3.0.100945.05%
8.15844.51%
8.05593.17%
11.03542.90%
11.5382.04%
12.5.5.117281.50%
7.07271.45%
12.5.1.60261.40%
7.15231.23%
10.02221.18%
10.01191.02%
Other28015.03%

CommuniGate Pro (1,566 servers)

Version Number of Servers Percent
6.1.16.583.70%
6.2.1483.07%
6.1.18.462.94%
6.1.16462.94%
6.1.18402.55%
5.3.13.322.04%
5.4.11322.04%
6.0.11.311.98%
6.1.10311.98%
6.1.11311.98%
6.2.1.271.72%
5.4.11.261.66%
6.2.0251.60%
6.0.11251.60%
5.1.16.241.53%
5.2.20.241.53%
6.2241.53%
5.2.20231.47%
5.1.16201.28%
6.1.11.201.28%
6.2.0.201.28%
6.0.9191.21%
5.0.14.191.21%
6.0.9.191.21%
5.2.3181.15%
6.1.19.181.15%
6.1.17171.09%
6.1.2.171.09%
6.1.15.161.02%
Other77049.17%

XMail (947 servers)

Version Number of Servers Percent
1.2742244.56%
1.2230231.89%
1.26666.97%
1.25656.86%
1.24343.59%
1.21181.90%
1.23111.16%
Other293.06%

Lotus Domino (768 servers)

Version Number of Servers Percent
8.5.3FP614919.40%
8.5.310713.93%
8.5.2354.56%
7.0.2303.91%
8.5263.39%
8.5.1253.26%
8.5.3FP1222.86%
8.5.3FP2222.86%
8.5.3FP4212.73%
7.0.3182.34%
8.5.3FP3172.21%
8.5.2FP4162.08%
8.5.2FP3151.95%
8.5.2FP2141.82%
8.0.1131.69%
8.5.1FP5131.69%
7.0121.56%
8.0121.56%
8.5.3FP5121.56%
7.0.1101.30%
6.5101.30%
7.0.491.17%
6.5.191.17%
8.0.281.04%
6.5.481.04%
7.0.3FP181.04%
Other12716.54%

WinWebMail (735 servers)

Version Number of Servers Percent
3.9.0.716622.59%
3.8.1.310013.61%
3.9.0.1527.07%
3.8.0.1435.85%
3.7.6.1395.31%
3.8.1.5314.22%
4.0.0.1304.08%
3.9.5.3263.54%
3.7.3.1243.27%
3.8.5.1233.13%
3.8.1.1222.99%
3.9.3.1212.86%
3.9.2.1182.45%
3.9.5.1172.31%
3.7.7.3172.31%
3.8.6.1172.31%
3.8.3.1162.18%
3.8.2.1111.50%
3.7.1.1101.36%
3.7.5.181.09%
Other445.99%

SurgeSMTP (550 servers)

Version Number of Servers Percent
7.3e2-216429.82%
7.1e-15910.73%
6.5a2-2325.82%
7.2i-1305.45%
7.2a-1264.73%
6.7c-1244.36%
7.3c3-3183.27%
6.5a-1173.09%
6.9c-1173.09%
7.2e-2173.09%
7.0c2-2152.73%
3.9e-1132.36%
5.2a-1122.18%
7.3d-591.64%
6.1c-181.45%
4.0u4-481.45%
6.4a-181.45%
7.3f-1671.27%
Other6612.00%

Qmail Toaster (458 servers)

Version Number of Servers Percent
1.334675.55%
1.038819.21%
1.291.97%
1.03.571.53%
1.03.651.09%
Other30.66%

Kerio (371 servers)

Version Number of Servers Percent
6.7.37219.41%
6.7.05414.56%
6.5.23910.51%
6.6.2338.89%
6.7.2308.09%
6.6.1195.12%
6.5.0184.85%
6.7.1164.31%
6.4.1154.04%
6.3.1112.96%
6.4.092.43%
6.5.182.16%
6.6.071.89%
6.3.071.89%
6.1.351.35%
6.4.241.08%
5.7.941.08%
Other205.39%

Merak (239 servers)

Version Number of Servers Percent
8.0.37029.29%
8.9.14518.83%
8.5.0177.11%
8.3.8145.86%
7.6.1125.02%
7.5.2125.02%
7.4.5114.60%
7.6.493.77%
9.0.352.09%
7.2.041.67%
4.2.131.26%
6.0.831.26%
7.4.231.26%
7.6.031.26%
Other2811.72%

ArGoSoft (168 servers)

Version Number of Servers Percent
1.8 (1.8.9.6)5834.52%
1.8 (1.8.9.3)2112.50%
1.8 (1.8.9.5)2011.90%
1.8 (1.8.9.1)169.52%
1.8 (1.8.9.2)63.57%
1.8 (1.8.8.7)52.98%
1.8 (1.8.8.8)52.98%
1.8 (1.8.7.3)52.98%
1.8 (1.8.8.9)42.38%
1.8 (1.8.6.0)31.79%
1.8 (1.8.9.4)31.79%
1.8 (1.8.2.1)21.19%
1.8 (1.8.8.4)21.19%
1.8 (1.8.5.8)21.19%
1.8 (1.8.7.6)21.19%
Other148.33%

MagicMail (158 servers)

Version Number of Servers Percent
Other158100.00%

Post.Office (141 servers)

Version Number of Servers Percent
4.33323.40%
4.2.22719.15%
3.5.3149.93%
4.1.2.4149.93%
4.2.1.396.38%
3.9.2.353.55%
3.1.242.84%
3.5.3J32.13%
3.5.132.13%
4.2.1.132.13%
4.1.132.13%
3.5.421.42%
3.8.7.421.42%
4.421.42%
4.1.0.321.42%
Other1510.64%

Gordano Messaging Suite (GMS) (73 servers)

Version Number of Servers Percent
Other73100.00%

GroupWise (73 servers)

Version Number of Servers Percent
14.2.22027.40%
14.2.1912.33%
6.5.7810.96%
14.0.156.85%
18.0.056.85%
14.2.045.48%
7.0.334.11%
7.0.222.74%
18.0.122.74%
6.0.222.74%
6.0.422.74%
6.0.311.37%
6.5.011.37%
6.5.511.37%
7.0.111.37%
8.0.311.37%
8.0.111.37%
14.0.011.37%
14.0.211.37%
7.0.411.37%
12.0.211.37%
12.0.111.37%
Other00.00%

Trend Micro (62 servers)

Version Number of Servers Percent
5.71930.65%
5.181219.35%
5.51219.35%
7.0812.90%
7.558.06%
3.5323.23%
7.111.61%
8.511.61%
811.61%
9.011.61%
Other00.00%

InterScan VirusWall (24 servers)

Version Number of Servers Percent
Other24100.00%

VisNetic (21 servers)

Version Number of Servers Percent
9.3.2.0733.33%
5.8.6.629.52%
5.0.2.329.52%
6.2.2.014.76%
8.0.314.76%
9.1.4.014.76%
8.5.0.514.76%
7.6.1.014.76%
9.1.4.114.76%
5.5.8.314.76%
8.0.3.114.76%
5.0.2.014.76%
8.5.0.814.76%
Other00.00%

OpenVMS (12 servers)

Version Number of Servers Percent
7.3758.33%
8.4433.33%
8.218.33%
Other00.00%

Mirapoint (8 servers)

Version Number of Servers Percent
4.4.2a-FCS225.00%
4.3.5-GA225.00%
4.4.3-GA225.00%
3.10.10a-GA112.50%
4.4.3a-GA112.50%
Other00.00%

Mercury (7 servers)

Version Number of Servers Percent
3.32457.14%
1.48228.57%
3.21114.29%
Other00.00%

Interscan (6 servers)

Version Number of Servers Percent
3.81-Build_1022233.33%
3.81-Build_1084116.67%
3.8-Build_3013116.67%
3.8-Build_1080116.67%
3.5 (build 1294)116.67%
Other00.00%

Neon Mail Server (5 servers)

Version Number of Servers Percent
3.1.3120.00%
3.0.7120.00%
3.1.0120.00%
3.1.5120.00%
3.1.2120.00%
Other00.00%

WebSTAR V (5 servers)

Version Number of Servers Percent
5.4.1360.00%
5.3.2120.00%
5.3.4120.00%
Other00.00%

MessageWall (3 servers)

Version Number of Servers Percent
1.0.83100.00%
Other00.00%

WebSTAR (2 servers)

Version Number of Servers Percent
Other2100.00%

ModusMail (1 servers)

Version Number of Servers Percent
4.1.361.211100.00%
Other00.00%




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