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You are viewing an outdated report. The latest version of this report was published on March 1st, 2024


    
Mail (MX) Server Survey
May 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 Queried1,783,405   100.0%
Number of Servers that didn't respond305,88117.15%
    Server didn't open socket299,47616.79%
    Server didn't provide banner6,4050.36%
Server provided banner1,477,52482.85%
Server banner identifies software in use917,90451.47%

As indicated by the above table, of the 1,783,405 servers queried, only 917,904 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
Exim524,58457.15%
Postfix309,59133.73%
Sendmail39,2354.27%
MailEnable20,3732.22%
MDaemon9,1921.00%
Microsoft6,6940.73%
IMail1,7100.19%
CommuniGate Pro1,4410.16%
XMail9070.10%
Lotus Domino6860.07%
WinWebMail6550.07%
Qmail Toaster6230.07%
SurgeSMTP5650.06%
Kerio3410.04%
OpenSMTPD3100.03%
Merak2250.02%
MagicMail1690.02%
ArGoSoft1550.02%
Post.Office1280.01%
GroupWise870.01%
Gordano Messaging Suite (GMS)790.01%
Trend Micro540.01%
InterScan VirusWall250.00%
VisNetic180.00%
OpenVMS170.00%
Mirapoint110.00%
Mercury80.00%
Interscan50.00%
WebSTAR V50.00%
Neon Mail Server40.00%
ModusMail30.00%
MessageWall30.00%
WebSTAR10.00%

Detailed Breakdown of Revisions on a Per-Server Basis

Exim (524,584 servers)

Version Number of Servers Percent
4.89392,67074.85%
4.8739,3347.50%
4.9030,0315.72%
4.8415,1602.89%
4.806,2991.20%
4.865,6781.08%
Other35,4126.75%

Postfix (309,591 servers)

Version Number of Servers Percent
Other309,591100.00%

Sendmail (39,235 servers)

Version Number of Servers Percent
8.14.511,06328.20%
8.14.48,88022.63%
8.13.85,51314.05%
8.13.13,4738.85%
8.15.22,7987.13%
8.14.71,9875.06%
8.14.31,4073.59%
8.14.91,1873.03%
Other2,9277.46%

MailEnable (20,373 servers)

Version Number of Servers Percent
9.00--2,61912.86%
9.16--2,29711.27%
8.60--8554.20%
8.53--7673.76%
6.5--6183.03%
8.51--5412.66%
8.04--3941.93%
1.986--3741.84%
8.60-8.60-3611.77%
9.75--3461.70%
10.14--2871.41%
8.50--2541.25%
5.10--2321.14%
10.11--2061.01%
Other10,22250.17%

MDaemon (9,192 servers)

Version Number of Servers Percent
17.5.37458.10%
17.5.25796.30%
13.5.14965.40%
13.6.34504.90%
16.5.24474.86%
11.0.33684.00%
11.0.03643.96%
13.0.43613.93%
13.0.53543.85%
17.5.12272.47%
16.0.42262.46%
12.5.62082.26%
12.5.41872.03%
14.5.21741.89%
17.0.21561.70%
16.5.11531.66%
10.1.21461.59%
15.0.31451.58%
10.0.01381.50%
16.0.11001.09%
10.1.0961.04%
15.5.3931.01%
Other2,97932.41%

Microsoft (6,694 servers)

Version Number of Servers Percent
6.0.3790.46753,67954.96%
7.5.7601.1751486612.94%
8.5.9600.1638469310.35%
6.0.3790.39594566.81%
8.0.9200.163841692.52%
5.0.2195.53291372.05%
10.0.14393.01101.64%
6.0.3790.18301091.63%
7.0.6002.182641071.60%
5.0.2195.6713671.00%
Other3014.50%

IMail (1,710 servers)

Version Number of Servers Percent
12.5.6.10120712.11%
8.2218510.82%
12.5.5.11517910.47%
12.4.1.151357.89%
9.231056.14%
12.5.3.931046.08%
12.5.4.1461025.96%
12.3.0.100865.03%
8.15804.68%
11.03533.10%
8.05523.04%
11.5331.93%
7.07261.52%
12.5.5.117251.46%
12.5.1.60231.35%
10.01201.17%
7.15191.11%
10.02191.11%
Other25715.03%

CommuniGate Pro (1,441 servers)

Version Number of Servers Percent
6.1.16956.59%
6.1.18785.41%
6.0.11523.61%
6.2.1473.26%
5.4.11473.26%
6.2.2463.19%
5.2.20432.98%
5.1.16412.85%
6.1.11402.78%
6.0.9362.50%
6.1.10362.50%
6.2.0342.36%
6.2.3342.36%
5.3.13332.29%
6.1.2281.94%
5.2.3281.94%
6.1.19261.80%
6.1.17261.80%
6.1.15251.73%
5.0.14241.67%
6.1.14231.60%
6.1.13221.53%
4.1.8221.53%
6.2211.46%
6.1.12201.39%
6.1.8191.32%
6.1.5161.11%
6.0.10161.11%
5.3.15151.04%
6.1.9151.04%
5.4.4151.04%
Other41829.01%

XMail (907 servers)

Version Number of Servers Percent
1.2741245.42%
1.2227830.65%
1.25677.39%
1.26596.50%
1.24323.53%
1.21161.76%
1.23141.54%
Other293.20%

Lotus Domino (686 servers)

Version Number of Servers Percent
8.5.3FP613319.39%
8.5.310415.16%
8.5.2324.66%
7.0.2253.64%
8.5.1243.50%
8.5202.92%
8.5.3FP2192.77%
8.5.3FP4172.48%
8.5.3FP1172.48%
7.0.3162.33%
8.5.2FP3152.19%
8.5.3FP3142.04%
8.5.2FP4131.90%
8.5.2FP2131.90%
7.0111.60%
8.5.3FP5111.60%
8.0.1111.60%
8.0111.60%
6.591.31%
7.0.191.31%
7.0.481.17%
8.0.281.17%
6.5.181.17%
7.0.3FP181.17%
6.5.471.02%
Other12317.93%

WinWebMail (655 servers)

Version Number of Servers Percent
3.9.0.714622.29%
3.8.1.39614.66%
3.9.0.1436.56%
3.8.0.1395.95%
4.0.0.1385.80%
3.7.6.1335.04%
3.8.1.5263.97%
3.9.5.3213.21%
3.8.1.1213.21%
3.7.3.1192.90%
3.8.5.1192.90%
3.9.3.1172.60%
3.7.7.3162.44%
3.8.6.1152.29%
3.9.2.1142.14%
3.8.3.1131.98%
3.9.5.1131.98%
3.8.2.1111.68%
3.7.1.1101.53%
Other456.87%

Qmail Toaster (623 servers)

Version Number of Servers Percent
1.350280.58%
1.038613.80%
1.03.5111.77%
1.2101.61%
1.03.691.44%
Other50.80%

SurgeSMTP (565 servers)

Version Number of Servers Percent
7.3e2-218532.74%
7.1e-1519.03%
6.5a2-2356.19%
7.2i-1305.31%
6.7c-1264.60%
6.9c-1264.60%
7.2a-1223.89%
7.3c3-3193.36%
7.2e-2152.65%
6.5a-1142.48%
7.0c2-2142.48%
3.9e-1132.30%
5.2a-1101.77%
7.3g-181.42%
4.0u4-471.24%
7.3h-661.06%
6.1c-161.06%
6.4a-161.06%
Other7212.74%

Kerio (341 servers)

Version Number of Servers Percent
6.7.36920.23%
6.7.05014.66%
6.5.23811.14%
6.6.2339.68%
6.7.2205.87%
6.5.0185.28%
6.4.1174.99%
6.6.1164.69%
6.7.1154.40%
6.3.192.64%
6.4.092.64%
6.5.161.76%
6.6.061.76%
6.4.251.47%
6.3.041.17%
6.1.341.17%
5.7.941.17%
Other185.28%

OpenSMTPD (310 servers)

Version Number of Servers Percent
Other310100.00%

Merak (225 servers)

Version Number of Servers Percent
8.0.36528.89%
8.9.14017.78%
8.5.0177.56%
7.5.2135.78%
7.4.5135.78%
8.3.8135.78%
7.6.1114.89%
7.6.483.56%
9.0.352.22%
4.2.131.33%
7.6.031.33%
7.2.031.33%
6.0.831.33%
Other2812.44%

MagicMail (169 servers)

Version Number of Servers Percent
Other169100.00%

ArGoSoft (155 servers)

Version Number of Servers Percent
1.8 (1.8.9.6)5334.19%
1.8 (1.8.9.3)2012.90%
1.8 (1.8.9.5)2012.90%
1.8 (1.8.9.1)1610.32%
1.8 (1.8.7.3)53.23%
1.8 (1.8.9.2)53.23%
1.8 (1.8.8.8)42.58%
1.8 (1.8.8.9)42.58%
1.8 (1.8.9.4)31.94%
1.8 (1.8.6.0)31.94%
1.8 (1.8.7.6)21.29%
1.8 (1.8.8.4)21.29%
1.8 (1.8.8.7)21.29%
1.8 (1.8.5.8)21.29%
1.8 (1.8.2.1)21.29%
Other127.74%

Post.Office (128 servers)

Version Number of Servers Percent
4.33426.56%
4.2.22620.31%
4.1.2.4129.38%
3.5.3129.38%
4.2.1.375.47%
4.1.143.12%
3.9.2.332.34%
4.2.1.132.34%
3.5.132.34%
3.5.3J32.34%
3.1.232.34%
4.421.56%
Other1612.50%

GroupWise (87 servers)

Version Number of Servers Percent
14.2.22124.14%
14.2.189.20%
14.2.066.90%
6.5.766.90%
18.0.066.90%
14.0.155.75%
18.0.155.75%
7.0.344.60%
8.0.344.60%
7.0.233.45%
14.2.322.30%
14.0.022.30%
7.0.422.30%
6.0.222.30%
6.5.411.15%
6.5.011.15%
6.0.311.15%
6.5.511.15%
12.0.111.15%
7.0.111.15%
8.0.011.15%
14.0.211.15%
8.0.111.15%
6.0.411.15%
12.0.211.15%
Other00.00%

Gordano Messaging Suite (GMS) (79 servers)

Version Number of Servers Percent
Other79100.00%

Trend Micro (54 servers)

Version Number of Servers Percent
5.71629.63%
5.51018.52%
5.18916.67%
7.0814.81%
7.559.26%
3.5323.70%
7.111.85%
8.511.85%
7.5ready11.85%
9.011.85%
Other00.00%

InterScan VirusWall (25 servers)

Version Number of Servers Percent
Other25100.00%

VisNetic (18 servers)

Version Number of Servers Percent
9.3.2.0738.89%
5.5.8.3211.11%
5.0.2.3211.11%
6.2.2.015.56%
8.0.315.56%
5.8.6.615.56%
9.1.4.015.56%
8.0.3.115.56%
5.0.2.015.56%
8.5.0.815.56%
Other00.00%

OpenVMS (17 servers)

Version Number of Servers Percent
8.4847.06%
7.3635.29%
8.3211.76%
8.215.88%
Other00.00%

Mirapoint (11 servers)

Version Number of Servers Percent
4.4.2a-FCS218.18%
4.3.5-GA218.18%
4.4.3-GA218.18%
4.1.9-GA19.09%
4.3.6-GA19.09%
3.10.10a-GA19.09%
4.4.3a-GA19.09%
4.4.5-GA19.09%
Other00.00%

Mercury (8 servers)

Version Number of Servers Percent
3.32450.00%
1.48337.50%
3.21112.50%
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%
3.5 (build 1294)120.00%
Other00.00%

WebSTAR V (5 servers)

Version Number of Servers Percent
5.4.1480.00%
5.3.4120.00%
Other00.00%

Neon Mail Server (4 servers)

Version Number of Servers Percent
3.0.7125.00%
3.1.0125.00%
3.1.5125.00%
3.1.2125.00%
Other00.00%

ModusMail (3 servers)

Version Number of Servers Percent
4.1.361.21266.67%
4.35.477.8133.33%
Other00.00%

MessageWall (3 servers)

Version Number of Servers Percent
1.0.83100.00%
Other00.00%

WebSTAR (1 servers)

Version Number of Servers Percent
Other1100.00%




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