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You are viewing an outdated report. The latest version of this report was published on April 1st, 2020


    
Mail (MX) Server Survey
February 1st, 2020

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 Queried1,710,309   100.0%
Number of Servers that didn't respond315,03718.42%
    Server didn't open socket309,76918.11%
    Server didn't provide banner5,2680.31%
Server provided banner1,395,27281.58%
Server banner identifies software in use866,98550.69%

As indicated by the above table, of the 1,710,309 servers queried, only 866,985 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
Exim494,52357.04%
Postfix302,91534.94%
Sendmail33,4863.86%
MailEnable18,2602.11%
MDaemon6,8380.79%
Microsoft4,2560.49%
IMail1,2450.14%
CommuniGate Pro1,2120.14%
XMail7510.09%
Qmail Toaster7100.08%
SurgeSMTP4970.06%
Lotus Domino4700.05%
WinWebMail4430.05%
OpenSMTPD3950.05%
Kerio2180.03%
MagicMail1710.02%
Merak1430.02%
Post.Office1200.01%
ArGoSoft1000.01%
GroupWise780.01%
Gordano Messaging Suite (GMS)660.01%
Trend Micro400.00%
OpenVMS130.00%
InterScan VirusWall90.00%
VisNetic90.00%
Mercury40.00%
Interscan40.00%
WebSTAR V30.00%
ModusMail20.00%
MessageWall20.00%
Mirapoint10.00%
Neon Mail Server10.00%

Detailed Breakdown of Revisions on a Per-Server Basis

Exim (494,523 servers)

Version Number of Servers Percent
4.92368,10374.44%
4.9136,0957.30%
4.92.328,7235.81%
4.8710,7152.17%
4.898,9501.81%
4.847,4961.52%
4.92.26,2401.26%
4.905,3681.09%
Other22,8334.62%

Postfix (302,915 servers)

Version Number of Servers Percent
Other302,915100.00%

Sendmail (33,486 servers)

Version Number of Servers Percent
8.15.213,18639.38%
8.14.46,26318.70%
8.13.83,1069.28%
8.14.72,9428.79%
8.14.52,5077.49%
8.13.11,9895.94%
8.14.98782.62%
8.14.36331.89%
Other1,9825.92%

MailEnable (18,260 servers)

Version Number of Servers Percent
10.25--5,87732.19%
10.27--1,3557.42%
9.00--9695.31%
10.12--4232.32%
9.16--3411.87%
8.60--3221.76%
8.53--2351.29%
10.20--2351.29%
6.5--2291.25%
10.28--10.281971.08%
10.28--1881.03%
9.00--9.001881.03%
8.51--1841.01%
Other7,51741.17%

MDaemon (6,838 servers)

Version Number of Servers Percent
19.5.36108.92%
13.5.14486.55%
13.6.33855.63%
19.5.13294.81%
13.0.42894.23%
13.0.52683.92%
19.0.32493.64%
11.0.02453.58%
11.0.32433.55%
16.5.22103.07%
12.5.61492.18%
12.5.41492.18%
14.5.21442.11%
19.5.01081.58%
10.1.2941.37%
10.0.0911.33%
18.5.1851.24%
15.0.3841.23%
18.5.3821.20%
16.0.4771.13%
18.5.2701.02%
Other2,42935.52%

Microsoft (4,256 servers)

Version Number of Servers Percent
6.0.3790.46751,86143.73%
8.5.9600.1638461814.52%
7.5.7601.1751451412.08%
10.0.14393.26082676.27%
6.0.3790.39592435.71%
8.0.9200.163841242.91%
5.0.2195.53291202.82%
7.0.6002.18264661.55%
6.0.3790.1830621.46%
5.0.2195.6713541.27%
5.0.2195.7381481.13%
10.0.17763.1461.08%
Other2335.47%

IMail (1,245 servers)

Version Number of Servers Percent
12.5.7.5919215.42%
12.5.6.10117413.98%
12.4.1.151179.40%
9.23705.62%
12.5.3.93695.54%
8.22624.98%
12.5.5.115614.90%
8.15493.94%
12.3.0.100483.86%
8.05423.37%
12.5.4.146332.65%
11.03312.49%
12.5.7.58292.33%
10.02221.77%
12.5.6.105221.77%
12.5.5.117181.45%
11.5181.45%
10.01141.12%
8.00131.04%
7.15131.04%
Other14811.89%

CommuniGate Pro (1,212 servers)

Version Number of Servers Percent
6.2.1414111.63%
6.2.12675.53%
6.0.11473.88%
5.4.11433.55%
6.1.20413.38%
6.1.16383.14%
5.2.20352.89%
5.3.13352.89%
6.2.13292.39%
6.1.18282.31%
5.1.16252.06%
6.0.9241.98%
6.2.7201.65%
6.2.10201.65%
6.1.11191.57%
6.1.12171.40%
5.2.3161.32%
6.1.10161.32%
6.2.9161.32%
6.2.15141.16%
6.1.2141.16%
6.2.1141.16%
4.2.10131.07%
6.1.13131.07%
Other46738.53%

XMail (751 servers)

Version Number of Servers Percent
1.2737449.80%
1.2223731.56%
1.26425.59%
1.25374.93%
1.24283.73%
Other334.39%

Qmail Toaster (710 servers)

Version Number of Servers Percent
1.352573.94%
1.0316322.96%
1.03.5101.41%
Other121.69%

SurgeSMTP (497 servers)

Version Number of Servers Percent
7.3o4-416533.20%
7.3e2-25611.27%
7.1e-1285.63%
7.3i2-2234.63%
6.5a2-2224.43%
7.4a-1163.22%
7.2a-1153.02%
6.7c-1153.02%
7.2i-1153.02%
7.4e-1132.62%
3.9e-1112.21%
6.9c-181.61%
6.5a-181.61%
7.2e-271.41%
4.0u4-461.21%
7.3c3-351.01%
Other8416.90%

Lotus Domino (470 servers)

Version Number of Servers Percent
8.5.3FP610422.13%
8.5.36313.40%
8.5.2245.11%
8.5204.26%
7.0.2173.62%
8.5.1153.19%
7.0122.55%
8.5.3FP3112.34%
8.5.2FP2112.34%
7.0.3102.13%
8.5.2FP3102.13%
8.5.3FP291.91%
8.5.3FP191.91%
8.0.191.91%
8.5.3FP491.91%
8.5.2FP481.70%
8.081.70%
8.5.1FP571.49%
8.5.2FP4HF75961.28%
8.5.3FP561.28%
6.551.06%
6.5.451.06%
7.0.4FP251.06%
7.0.3FP151.06%
6.5.351.06%
8.5.1FP451.06%
Other7215.32%

WinWebMail (443 servers)

Version Number of Servers Percent
4.2.0.19220.77%
3.9.0.77015.80%
3.8.1.35311.96%
3.9.0.1327.22%
3.8.0.1224.97%
3.7.6.1163.61%
3.8.1.5153.39%
4.1.0.1153.39%
4.0.0.1143.16%
3.7.3.1112.48%
3.9.2.1102.26%
3.8.1.192.03%
3.8.5.192.03%
3.9.3.181.81%
3.8.3.181.81%
3.8.6.171.58%
3.7.7.361.35%
3.9.5.361.35%
3.7.0.561.35%
3.7.1.151.13%
1.051.13%
3.8.2.151.13%
Other194.29%

OpenSMTPD (395 servers)

Version Number of Servers Percent
Other395100.00%

Kerio (218 servers)

Version Number of Servers Percent
6.7.35324.31%
6.7.03013.76%
6.7.22310.55%
6.5.2198.72%
6.6.2188.26%
6.5.0115.05%
6.6.194.13%
6.7.194.13%
6.4.183.67%
6.4.073.21%
6.3.152.29%
6.3.031.38%
6.1.031.38%
6.6.031.38%
Other177.80%

MagicMail (171 servers)

Version Number of Servers Percent
Other171100.00%

Merak (143 servers)

Version Number of Servers Percent
8.0.33625.17%
8.9.13020.98%
7.6.1106.99%
7.4.596.29%
8.5.085.59%
9.0.374.90%
8.3.864.20%
7.5.242.80%
7.6.442.80%
6.0.832.10%
7.0.132.10%
7.6.021.40%
4.4.121.40%
7.4.221.40%
Other1711.89%

Post.Office (120 servers)

Version Number of Servers Percent
4.33226.67%
4.2.22117.50%
4.41714.17%
4.1.2.41210.00%
3.5.386.67%
4.2.1.354.17%
4.1.132.50%
3.5.132.50%
4.0.121.67%
3.9.221.67%
4.2.1.121.67%
Other1310.83%

ArGoSoft (100 servers)

Version Number of Servers Percent
1.8 (1.8.9.6)3030.00%
1.8 (1.8.9.3)1717.00%
1.8 (1.8.9.5)1414.00%
1.8 (1.8.9.1)99.00%
1.8 (1.8.8.8)33.00%
1.8 (1.8.7.3)33.00%
1.8 (1.8.6.0)33.00%
1.8 (1.8.9.2)22.00%
1.8 (1.8.5.8)22.00%
1.8 (1.8.8.7)22.00%
1.8 (1.8.8.9)22.00%
1.8 (1.8.7.6)22.00%
1.8 (1.8.5.9)11.00%
1.8 (1.8.5.5)11.00%
1.8 (1.8.8.4)11.00%
1.8 (1.8.6.1)11.00%
1.8 (1.8.9.0)11.00%
1.8 (1.8.9.4)11.00%
1.8 (1.8.3.5)11.00%
1.8 (1.8.1.1)11.00%
1.8 (1.8.2.1)11.00%
1.8 (1.8.1.7)11.00%
1.8 (1.8.2.5)11.00%
Other00.00%

GroupWise (78 servers)

Version Number of Servers Percent
18.1.11519.23%
14.2.2911.54%
18.1.078.97%
18.2.056.41%
14.2.156.41%
14.2.356.41%
14.0.145.13%
18.0.245.13%
18.0.033.85%
14.2.033.85%
6.5.722.56%
14.0.022.56%
8.0.322.56%
6.5.411.28%
6.0.211.28%
7.0.211.28%
7.0.311.28%
6.5.211.28%
6.5.011.28%
6.5.611.28%
18.0.111.28%
7.0.111.28%
12.0.111.28%
6.5.511.28%
6.0.411.28%
Other00.00%

Gordano Messaging Suite (GMS) (66 servers)

Version Number of Servers Percent
Other66100.00%

Trend Micro (40 servers)

Version Number of Servers Percent
5.71127.50%
5.181025.00%
5.5512.50%
7.5512.50%
7.0512.50%
7.5ready12.50%
812.50%
9.012.50%
7.112.50%
Other00.00%

OpenVMS (13 servers)

Version Number of Servers Percent
8.4753.85%
7.3323.08%
8.3215.38%
8.217.69%
Other00.00%

InterScan VirusWall (9 servers)

Version Number of Servers Percent
Other9100.00%

VisNetic (9 servers)

Version Number of Servers Percent
9.3.2.0777.78%
8.0.3111.11%
5.5.8.3111.11%
Other00.00%

Mercury (4 servers)

Version Number of Servers Percent
1.48375.00%
3.32125.00%
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%

WebSTAR V (3 servers)

Version Number of Servers Percent
5.4.1266.67%
5.3.2133.33%
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%

Mirapoint (1 servers)

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

Neon Mail Server (1 servers)

Version Number of Servers Percent
3.1.21100.00%
Other00.00%




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