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You are viewing an outdated report. The latest version of this report was published on May 1st, 2017


    
Mail (MX) Server Survey
April 1st, 2017

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 Queried1,988,367   100.0%
Number of Servers that didn't respond347,77517.49%
    Server didn't open socket338,48417.02%
    Server didn't provide banner9,2910.47%
Server provided banner1,640,59282.51%
Server banner identifies software in use1,000,52450.32%

As indicated by the above table, of the 1,988,367 servers queried, only 1,000,524 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
Exim562,46256.22%
Postfix330,43133.03%
Sendmail50,0575.00%
MailEnable23,3232.33%
MDaemon13,2891.33%
Microsoft11,0341.10%
IMail2,1440.21%
CommuniGate Pro1,8330.18%
Lotus Domino1,1050.11%
WinWebMail1,0810.11%
XMail1,0690.11%
SurgeSMTP6220.06%
Qmail Toaster5490.05%
Kerio4650.05%
Merak3200.03%
ArGoSoft2090.02%
Post.Office1620.02%
Gordano Messaging Suite (GMS)900.01%
GroupWise860.01%
Trend Micro720.01%
VisNetic310.00%
InterScan VirusWall270.00%
Mirapoint180.00%
Mercury100.00%
OpenVMS100.00%
Neon Mail Server70.00%
WebSTAR V60.00%
Interscan50.00%
MessageWall40.00%
NetIQ MailMarshal10.00%
MAILsweeper10.00%
WebSTAR10.00%

Detailed Breakdown of Revisions on a Per-Server Basis

Exim (562,462 servers)

Version Number of Servers Percent
4.88252,45944.88%
4.87212,29737.74%
4.8420,0833.57%
4.8613,3882.38%
4.8011,7062.08%
4.728,6121.53%
4.858,3521.48%
4.767,7031.37%
4.827,4901.33%
4.80.15,6571.01%
Other14,7152.62%

Postfix (330,431 servers)

Version Number of Servers Percent
Other330,431100.00%

Sendmail (50,057 servers)

Version Number of Servers Percent
8.14.511,79923.57%
8.14.411,62123.22%
8.13.88,70017.38%
8.13.15,31110.61%
8.14.32,4664.93%
8.15.22,2144.42%
8.14.71,5083.01%
8.14.91,4552.91%
8.12.11.200603088321.66%
8.14.25061.01%
Other3,6457.28%

MailEnable (23,323 servers)

Version Number of Servers Percent
9.00--3,16213.56%
8.60--1,3935.97%
8.53--1,1534.94%
6.5--1,0234.39%
1.986--7823.35%
8.51--7693.30%
8.04--5702.44%
8.60-8.60-4531.94%
9.53--4271.83%
5.10--4191.80%
8.50--4111.76%
9.16--3781.62%
8.00--3591.54%
6.0--3001.29%
7.06--2931.26%
4.26--2891.24%
9.50--2521.08%
9.12--2451.05%
Other10,64545.64%

MDaemon (13,289 servers)

Version Number of Servers Percent
16.5.22,67020.09%
16.0.47115.35%
16.5.16254.70%
13.5.15964.48%
11.0.05263.96%
11.0.35103.84%
13.0.44963.73%
13.0.54823.63%
13.6.34263.21%
15.0.33072.31%
12.5.62732.05%
12.5.42301.73%
15.5.32151.62%
16.5.02151.62%
14.5.22111.59%
10.0.02091.57%
10.1.22021.52%
16.0.11911.44%
16.0.21661.25%
Other4,02830.31%

Microsoft (11,034 servers)

Version Number of Servers Percent
6.0.3790.46756,93362.83%
7.5.7601.175141,20410.91%
6.0.3790.39598417.62%
8.5.9600.163847166.49%
6.0.3790.18302332.11%
8.0.9200.163841921.74%
5.0.2195.53291711.55%
7.0.6002.182641641.49%
5.0.2195.73811251.13%
Other4554.12%

IMail (2,144 servers)

Version Number of Servers Percent
12.5.5.11534816.23%
12.4.1.151828.49%
8.221738.07%
12.5.3.931667.74%
9.231517.04%
12.5.4.1461507.00%
8.151175.46%
12.3.0.1001034.80%
8.05733.40%
11.03542.52%
11.5532.47%
7.07351.63%
12.5.1.60321.49%
12.5.3.99301.40%
11.02291.35%
7.15281.31%
12.5.2.62231.07%
12.1.0.270231.07%
12.2.0.235231.07%
12.5.5.117221.03%
8.00221.03%
Other30714.32%

CommuniGate Pro (1,833 servers)

Version Number of Servers Percent
5.1.161488.07%
6.1.11693.76%
6.1.14573.11%
6.1.10402.18%
6.0.11382.07%
6.1.13382.07%
6.1.12372.02%
5.4.11361.96%
5.2.20351.91%
6.1.14.351.91%
5.4.11.331.80%
6.1.11.331.80%
5.3.13.311.69%
6.1.10.301.64%
6.0.11.291.58%
5.1.16.271.47%
6.1.13.271.47%
5.2.3271.47%
6.0.9271.47%
5.2.20.261.42%
6.1.2251.36%
6.1.15.231.25%
6.1.12.221.20%
6.1.15221.20%
6.0.9.211.15%
5.0.14.211.15%
6.1.8211.15%
6.1.5191.04%
Other83645.61%

Lotus Domino (1,105 servers)

Version Number of Servers Percent
8.5.3FP620718.73%
8.5.315213.76%
8.5.2514.62%
8.5.1403.62%
8.5383.44%
7.0.2373.35%
8.5.3FP2332.99%
8.5.3FP4292.62%
8.5.2FP4292.62%
8.5.2FP3292.62%
8.5.3FP1272.44%
7.0.3262.35%
8.5.3FP3252.26%
8.5.3FP5242.17%
8.0201.81%
7.0181.63%
8.0.1181.63%
8.5.2FP2161.45%
7.0.4151.36%
6.5.1151.36%
8.5.1FP5141.27%
7.0.1141.27%
6.5.4131.18%
6.5.5131.18%
Other20218.28%

WinWebMail (1,081 servers)

Version Number of Servers Percent
3.9.0.728025.90%
3.8.1.316915.63%
3.9.0.1767.03%
3.7.6.1736.75%
3.8.0.1736.75%
3.8.1.5514.72%
3.7.3.1423.89%
3.8.1.1413.79%
3.8.5.1413.79%
3.8.6.1393.61%
3.7.7.3373.42%
3.8.2.1242.22%
3.7.1.1201.85%
3.8.3.1191.76%
3.9.1.1181.67%
3.8.3.3121.11%
3.7.5.1111.02%
Other555.09%

XMail (1,069 servers)

Version Number of Servers Percent
1.2744841.91%
1.2232930.78%
1.25878.14%
1.26797.39%
1.24514.77%
1.21232.15%
1.23131.22%
Other393.65%

SurgeSMTP (622 servers)

Version Number of Servers Percent
7.1e-112820.58%
7.2e-29515.27%
7.2a-1619.81%
6.5a2-2487.72%
6.7c-1264.18%
6.5a-1254.02%
6.9c-1233.70%
7.0c2-2203.22%
7.2i-1172.73%
3.9e-1162.57%
6.1c-1152.41%
5.2a-1142.25%
6.4a-1111.77%
4.0u4-4101.61%
7.1f-3271.13%
5.3h2-271.13%
3.8k4-471.13%
Other9214.79%

Qmail Toaster (549 servers)

Version Number of Servers Percent
1.346484.52%
1.03498.93%
1.2122.19%
1.03.591.64%
Other152.73%

Kerio (465 servers)

Version Number of Servers Percent
6.7.310121.72%
6.7.05211.18%
6.5.2449.46%
6.6.2408.60%
6.5.0275.81%
6.7.2255.38%
6.4.1245.16%
6.7.1204.30%
6.6.1194.09%
6.3.0163.44%
6.3.1153.23%
6.5.1132.80%
6.4.0122.58%
6.1.391.94%
6.6.081.72%
5.7.961.29%
6.1.051.08%
6.2.051.08%
Other245.16%

Merak (320 servers)

Version Number of Servers Percent
8.0.38927.81%
8.9.15216.25%
8.5.0299.06%
7.5.2185.62%
7.4.5185.62%
8.3.8165.00%
7.6.1134.06%
7.6.4123.75%
8.3.1572.19%
7.4.272.19%
7.2.061.88%
7.0.151.56%
9.0.341.25%
8.9.041.25%
Other4012.50%

ArGoSoft (209 servers)

Version Number of Servers Percent
1.8 (1.8.9.6)7435.41%
1.8 (1.8.9.5)2511.96%
1.8 (1.8.9.1)2210.53%
1.8 (1.8.9.3)209.57%
1.8 (1.8.8.7)94.31%
1.8 (1.8.8.8)83.83%
1.8 (1.8.7.3)62.87%
1.8 (1.8.9.2)52.39%
1.8 (1.8.9.4)41.91%
1.8 (1.8.6.0)41.91%
1.8 (1.8.8.9)41.91%
Other2813.40%

Post.Office (162 servers)

Version Number of Servers Percent
4.2.23521.60%
4.32716.67%
4.1.2.42112.96%
3.5.31811.11%
4.2.1.395.56%
3.9.2.353.09%
4.2.1.153.09%
3.9.242.47%
3.1.242.47%
4.0.142.47%
3.8.7.431.85%
3.5.131.85%
4.1.131.85%
4.231.85%
3.5.3J21.23%
3.5.421.23%
4.1.2.321.23%
4.1.0.321.23%
Other106.17%

Gordano Messaging Suite (GMS) (90 servers)

Version Number of Servers Percent
Other90100.00%

GroupWise (86 servers)

Version Number of Servers Percent
14.2.12832.56%
14.2.089.30%
14.0.178.14%
14.0.278.14%
6.5.744.65%
7.0.344.65%
14.0.044.65%
12.0.433.49%
8.0.333.49%
6.0.222.33%
7.0.422.33%
12.0.122.33%
8.0.122.33%
12.0.211.16%
6.5.511.16%
14.2.211.16%
6.5.411.16%
7.0.111.16%
7.0.211.16%
6.0.311.16%
6.5.211.16%
8.0.211.16%
6.0.411.16%
Other00.00%

Trend Micro (72 servers)

Version Number of Servers Percent
5.72636.11%
5.181419.44%
5.51216.67%
7.0811.11%
7.545.56%
3.5322.78%
7.122.78%
811.39%
8.511.39%
8.5.211.39%
9.011.39%
Other00.00%

VisNetic (31 servers)

Version Number of Servers Percent
9.3.2.01032.26%
6.2.2.026.45%
5.3.5.026.45%
5.5.8.326.45%
9.1.4.126.45%
5.8.6.626.45%
5.0.2.326.45%
9.1.4.1 provided by Techfount Systems Pte Ltd13.23%
8.5.0.813.23%
8.0.3.113.23%
5.0.2.013.23%
8.5.0.513.23%
8.0.313.23%
8.3.0.113.23%
9.1.4.013.23%
7.6.1.013.23%
Other00.00%

InterScan VirusWall (27 servers)

Version Number of Servers Percent
Other27100.00%

Mirapoint (18 servers)

Version Number of Servers Percent
4.4.3-GA527.78%
4.4.2a-FCS316.67%
4.3.5-GA316.67%
4.4.4-GA211.11%
4.4.6-GA15.56%
4.4.7-GA15.56%
3.7.5a-GA15.56%
3.10.10a-GA15.56%
4.3.6-GA15.56%
Other00.00%

Mercury (10 servers)

Version Number of Servers Percent
1.48440.00%
3.32440.00%
4.x110.00%
3.21110.00%
Other00.00%

OpenVMS (10 servers)

Version Number of Servers Percent
7.3550.00%
8.4330.00%
8.3110.00%
8.2110.00%
Other00.00%

Neon Mail Server (7 servers)

Version Number of Servers Percent
3.1.2228.57%
3.1.0228.57%
3.0.8114.29%
3.1.3114.29%
3.0.7114.29%
Other00.00%

WebSTAR V (6 servers)

Version Number of Servers Percent
5.4.1350.00%
5.3.4116.67%
5.4.0116.67%
5.3.2116.67%
Other00.00%

Interscan (5 servers)

Version Number of Servers Percent
3.81-Build_1022120.00%
3.8-Build_1080120.00%
3.5 (build 1294)120.00%
3.81-Build_1084120.00%
3.8-Build_3013120.00%
Other00.00%

MessageWall (4 servers)

Version Number of Servers Percent
1.0.84100.00%
Other00.00%

NetIQ MailMarshal (1 servers)

Version Number of Servers Percent
5.5.6.71100.00%
Other00.00%

MAILsweeper (1 servers)

Version Number of Servers Percent
4.3.20.01100.00%
Other00.00%

WebSTAR (1 servers)

Version Number of Servers Percent
Other1100.00%




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