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You are viewing an outdated report.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
March 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 Queried2,008,770   100.0%
Number of Servers that didn't respond362,97518.07%
    Server didn't open socket355,44617.69%
    Server didn't provide banner7,5290.37%
Server provided banner1,645,79581.93%
Server banner identifies software in use1,002,25749.89%

As indicated by the above table, of the 2,008,770 servers queried, only 1,002,257 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
Exim561,32156.01%
Postfix331,38933.06%
Sendmail50,7495.06%
MailEnable23,3202.33%
MDaemon13,4131.34%
Microsoft11,3951.14%
IMail2,2070.22%
CommuniGate Pro1,8570.19%
Lotus Domino1,1220.11%
XMail1,0900.11%
WinWebMail1,0620.11%
Qmail Toaster7980.08%
SurgeSMTP6740.07%
Kerio4760.05%
Merak3120.03%
MagicMail2610.03%
ArGoSoft2170.02%
Post.Office1610.02%
Gordano Messaging Suite (GMS)1140.01%
GroupWise1030.01%
Trend Micro740.01%
InterScan VirusWall300.00%
VisNetic290.00%
Mirapoint240.00%
OpenVMS140.00%
ModusMail90.00%
Mercury90.00%
WebSTAR V70.00%
MessageWall60.00%
Interscan50.00%
Neon Mail Server50.00%
WebSTAR20.00%
MAILsweeper10.00%
NetIQ MailMarshal10.00%

Detailed Breakdown of Revisions on a Per-Server Basis

Exim (561,321 servers)

Version Number of Servers Percent
4.87254,27445.30%
4.88206,79536.84%
4.8420,3973.63%
4.8613,5192.41%
4.8012,0062.14%
4.728,9981.60%
4.858,9801.60%
4.767,9591.42%
4.827,6031.35%
4.80.15,9351.06%
Other14,8552.65%

Postfix (331,389 servers)

Version Number of Servers Percent
Other331,389100.00%

Sendmail (50,749 servers)

Version Number of Servers Percent
8.14.411,81823.29%
8.14.511,72123.10%
8.13.88,92117.58%
8.13.15,41610.67%
8.14.32,5525.03%
8.15.22,1994.33%
8.14.71,4932.94%
8.14.91,4752.91%
8.12.11.200603088521.68%
8.14.25141.01%
Other3,7887.46%

MailEnable (23,320 servers)

Version Number of Servers Percent
9.00--3,04313.05%
8.60--1,4126.05%
8.53--1,1444.91%
6.5--1,0514.51%
1.986--8323.57%
8.51--8033.44%
8.04--5852.51%
8.60-8.60-4551.95%
5.10--4371.87%
8.50--4281.84%
9.53--4261.83%
8.00--3641.56%
6.0--3111.33%
4.26--3091.33%
7.06--3041.30%
9.16--2791.20%
9.50--2671.14%
9.12--2631.13%
Other10,60745.48%

MDaemon (13,413 servers)

Version Number of Servers Percent
16.5.22,46918.41%
16.0.47795.81%
16.5.16945.17%
13.5.15834.35%
11.0.05153.84%
13.0.44973.71%
11.0.34973.71%
13.0.54953.69%
13.6.34413.29%
15.0.33192.38%
12.5.62742.04%
15.5.32411.80%
16.5.02361.76%
12.5.42311.72%
14.5.22171.62%
10.0.02141.60%
16.0.12051.53%
10.1.21941.45%
16.0.21781.33%
10.1.01361.01%
Other3,99829.81%

Microsoft (11,395 servers)

Version Number of Servers Percent
6.0.3790.46757,19163.11%
7.5.7601.175141,23710.86%
6.0.3790.39598537.49%
8.5.9600.163847176.29%
6.0.3790.18302432.13%
8.0.9200.163841971.73%
5.0.2195.53291801.58%
7.0.6002.182641731.52%
5.0.2195.73811321.16%
Other4724.14%

IMail (2,207 servers)

Version Number of Servers Percent
12.5.5.11533915.36%
12.4.1.151818.20%
8.221818.20%
12.5.3.931687.61%
12.5.4.1461587.16%
9.231526.89%
8.151135.12%
12.3.0.1001054.76%
8.05783.53%
11.03642.90%
11.5592.67%
7.07361.63%
10.02361.63%
12.5.1.60341.54%
11.02321.45%
7.15311.40%
12.5.3.99291.31%
12.2.0.235261.18%
12.5.2.62241.09%
12.1.0.270231.04%
Other33815.31%

CommuniGate Pro (1,857 servers)

Version Number of Servers Percent
5.1.161769.48%
6.1.111065.71%
6.1.141005.39%
6.1.10774.15%
5.4.11723.88%
6.1.13703.77%
6.0.11693.72%
6.1.12683.66%
5.2.20643.45%
6.0.9492.64%
6.1.2462.48%
5.3.13392.10%
5.2.3371.99%
6.1.8361.94%
5.0.14341.83%
5.3.15321.72%
4.1.8301.62%
6.1.5291.56%
6.0.10281.51%
6.1.7241.29%
5.1.12221.18%
6.1.4211.13%
5.4.4201.08%
5.4.5191.02%
Other58931.72%

Lotus Domino (1,122 servers)

Version Number of Servers Percent
8.5.3FP621118.81%
8.5.315513.81%
8.5.2534.72%
8.5.1454.01%
8.5393.48%
7.0.2373.30%
8.5.3FP4312.76%
8.5.2FP4292.58%
8.5.2FP3282.50%
8.5.3FP3272.41%
8.5.3FP2272.41%
8.5.3FP1242.14%
7.0.3232.05%
8.0.1232.05%
8.0211.87%
8.5.3FP5181.60%
8.5.1FP5171.52%
7.0171.52%
7.0.1171.52%
7.0.4161.43%
8.5.2FP2161.43%
6.5.1151.34%
6.5.5121.07%
6.5.4121.07%
Other20918.63%

XMail (1,090 servers)

Version Number of Servers Percent
1.2746742.84%
1.2232629.91%
1.25898.17%
1.26797.25%
1.24524.77%
1.21232.11%
1.23161.47%
Other383.49%

WinWebMail (1,062 servers)

Version Number of Servers Percent
3.9.0.728426.74%
3.8.1.316215.25%
3.7.6.1736.87%
3.8.0.1716.69%
3.9.0.1696.50%
3.8.1.5545.08%
3.7.3.1434.05%
3.8.5.1434.05%
3.8.1.1423.95%
3.7.7.3393.67%
3.8.6.1383.58%
3.8.2.1232.17%
3.7.1.1201.88%
3.8.3.1191.79%
3.7.0.5121.13%
3.8.3.3121.13%
Other585.46%

Qmail Toaster (798 servers)

Version Number of Servers Percent
1.371189.10%
1.03415.14%
1.2151.88%
1.03.691.13%
1.03.581.00%
Other141.75%

SurgeSMTP (674 servers)

Version Number of Servers Percent
7.1e-114721.81%
7.2a-18112.02%
7.2e-27310.83%
6.5a2-2527.72%
6.9c-1355.19%
6.7c-1304.45%
6.5a-1263.86%
7.0c2-2192.82%
3.9e-1182.67%
6.1c-1162.37%
5.2a-1162.37%
6.3c2-2111.63%
4.0u4-4101.48%
3.8k4-491.34%
6.4a-191.34%
7.2g-181.19%
5.3h2-281.19%
7.1f-3271.04%
Other9914.69%

Kerio (476 servers)

Version Number of Servers Percent
6.7.310021.01%
6.7.05311.13%
6.5.2428.82%
6.6.2428.82%
6.5.0296.09%
6.7.2285.88%
6.4.1255.25%
6.6.1204.20%
6.7.1193.99%
6.3.1163.36%
6.3.0163.36%
6.5.1142.94%
6.4.0132.73%
6.1.391.89%
6.6.091.89%
6.4.261.26%
6.2.061.26%
5.7.961.26%
6.1.051.05%
Other183.78%

Merak (312 servers)

Version Number of Servers Percent
8.0.39028.85%
8.9.14414.10%
8.5.0278.65%
7.4.5196.09%
7.5.2185.77%
8.3.8165.13%
7.6.4144.49%
7.6.1123.85%
7.4.272.24%
8.3.1572.24%
7.2.061.92%
7.0.151.60%
8.9.041.28%
Other4313.78%

MagicMail (261 servers)

Version Number of Servers Percent
Other261100.00%

ArGoSoft (217 servers)

Version Number of Servers Percent
1.8 (1.8.9.6)7635.02%
1.8 (1.8.9.1)2511.52%
1.8 (1.8.9.5)2411.06%
1.8 (1.8.9.3)209.22%
1.8 (1.8.8.8)104.61%
1.8 (1.8.8.7)94.15%
1.8 (1.8.9.2)62.76%
1.8 (1.8.7.3)62.76%
1.8 (1.8.6.0)62.76%
1.8 (1.8.8.9)41.84%
Other3114.29%

Post.Office (161 servers)

Version Number of Servers Percent
4.2.23320.50%
4.32918.01%
4.1.2.42113.04%
3.5.31710.56%
4.2.1.384.97%
3.9.2.353.11%
3.1.242.48%
4.2.1.142.48%
4.1.142.48%
4.0.142.48%
3.9.242.48%
3.8.7.431.86%
3.5.131.86%
4.221.24%
3.5.3J21.24%
3.5.421.24%
4.1.2.321.24%
4.1.0.221.24%
4.1.0.321.24%
Other106.21%

Gordano Messaging Suite (GMS) (114 servers)

Version Number of Servers Percent
Other114100.00%

GroupWise (103 servers)

Version Number of Servers Percent
14.2.13130.10%
14.2.01211.65%
14.0.276.80%
14.0.176.80%
6.5.776.80%
14.0.054.85%
7.0.343.88%
8.0.343.88%
7.0.232.91%
6.0.332.91%
7.0.432.91%
12.0.421.94%
6.0.221.94%
12.0.121.94%
8.0.221.94%
8.0.121.94%
Other76.80%

Trend Micro (74 servers)

Version Number of Servers Percent
5.72533.78%
5.181418.92%
5.51317.57%
7.0810.81%
7.556.76%
7.122.70%
3.5322.70%
8.511.35%
7.5ready11.35%
8.5.211.35%
9.011.35%
811.35%
Other00.00%

InterScan VirusWall (30 servers)

Version Number of Servers Percent
Other30100.00%

VisNetic (29 servers)

Version Number of Servers Percent
9.3.2.01034.48%
5.8.6.626.90%
5.0.2.326.90%
6.2.2.026.90%
5.5.8.326.90%
9.1.4.126.90%
8.0.313.45%
8.3.0.113.45%
9.1.4.013.45%
8.5.0.513.45%
8.0.3.113.45%
5.3.5.013.45%
5.0.2.013.45%
9.1.4.1 provided by Techfount Systems Pte Ltd13.45%
8.5.0.813.45%
Other00.00%

Mirapoint (24 servers)

Version Number of Servers Percent
4.4.3-GA520.83%
4.4.2a-FCS312.50%
4.4.5-GA312.50%
4.3.5-GA312.50%
4.4.4-GA28.33%
4.4.7-GA28.33%
4.1.9-GA14.17%
4.4.5a-GA14.17%
4.3.6-GA14.17%
3.10.10a-GA14.17%
3.7.5a-GA14.17%
4.4.6-GA14.17%
Other00.00%

OpenVMS (14 servers)

Version Number of Servers Percent
8.4535.71%
7.3535.71%
8.3321.43%
8.217.14%
Other00.00%

ModusMail (9 servers)

Version Number of Servers Percent
4.35.477.0555.56%
4.1.361.21222.22%
3.2.315.0111.11%
4.35.477.8111.11%
Other00.00%

Mercury (9 servers)

Version Number of Servers Percent
1.48444.44%
3.32333.33%
3.21111.11%
4.x111.11%
Other00.00%

WebSTAR V (7 servers)

Version Number of Servers Percent
5.4.1457.14%
5.4.0114.29%
5.3.2114.29%
5.3.4114.29%
Other00.00%

MessageWall (6 servers)

Version Number of Servers Percent
1.0.86100.00%
Other00.00%

Interscan (5 servers)

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

Neon Mail Server (5 servers)

Version Number of Servers Percent
3.1.2240.00%
3.1.0240.00%
3.0.7120.00%
Other00.00%

WebSTAR (2 servers)

Version Number of Servers Percent
Other2100.00%

MAILsweeper (1 servers)

Version Number of Servers Percent
4.3.20.01100.00%
Other00.00%

NetIQ MailMarshal (1 servers)

Version Number of Servers Percent
5.5.6.71100.00%
Other00.00%




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