Survey Data Mining:   Home | FAQ | Archive | Glossary
Free Reports
  
Mail (MX) Server Survey
October 1st, 2021

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 Queried734,049   100.0%
Number of Servers that didn't respond103,46414.09%
    Server didn't open socket101,70413.86%
    Server didn't provide banner1,7600.24%
Server provided banner630,58585.91%
Server banner identifies software in use422,47057.55%

As indicated by the above table, of the 734,049 servers queried, only 422,470 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
Exim256,78960.78%
Postfix136,48332.31%
Sendmail15,3533.63%
MailEnable8,3891.99%
MDaemon1,9330.46%
Microsoft1,0040.24%
CommuniGate Pro4600.11%
IMail3910.09%
Qmail Toaster3790.09%
XMail3080.07%
SurgeSMTP2310.05%
OpenSMTPD2140.05%
Lotus Domino1080.03%
MagicMail930.02%
WinWebMail930.02%
Merak550.01%
Kerio480.01%
Post.Office470.01%
GroupWise300.01%
ArGoSoft300.01%
Gordano Messaging Suite (GMS)110.00%
Trend Micro70.00%
OpenVMS60.00%
VisNetic30.00%
ModusMail20.00%
Interscan10.00%
WebSTAR V10.00%
Mirapoint10.00%

Detailed Breakdown of Revisions on a Per-Server Basis

Exim (256,789 servers)

Version Number of Servers Percent
4.94.2189,61673.84%
4.9330,93512.05%
4.947,3252.85%
4.924,9311.92%
4.913,6911.44%
4.92.33,0081.17%
4.892,6961.05%
Other14,5875.68%

Postfix (136,483 servers)

Version Number of Servers Percent
Other136,483100.00%

Sendmail (15,353 servers)

Version Number of Servers Percent
8.15.28,65456.37%
8.14.41,91312.46%
8.14.71,4359.35%
8.13.88605.60%
8.14.57805.08%
8.16.13902.54%
8.14.93162.06%
8.13.12591.69%
8.14.31661.08%
Other5803.78%

MailEnable (8,389 servers)

Version Number of Servers Percent
10.34--2,98635.59%
10.27--85710.22%
10.25--5156.14%
9.00--2232.66%
10.31--1491.78%
10.31-10.31-1441.72%
10.35--1111.32%
10.29--991.18%
9.00--9.00981.17%
9.16--951.13%
10.35--10.35881.05%
10.30--851.01%
Other2,93935.03%

MDaemon (1,933 servers)

Version Number of Servers Percent
21.0.321911.33%
21.0.21387.14%
13.5.11266.52%
13.0.5854.40%
19.5.5844.35%
11.0.0733.78%
11.0.3723.72%
13.0.4683.52%
21.0.1633.26%
16.5.2512.64%
20.0.4452.33%
19.5.4452.33%
12.5.6412.12%
14.5.2351.81%
20.0.3241.24%
21.0.0221.14%
12.5.4211.09%
10.1.2211.09%
16.0.4201.03%
Other68035.18%

Microsoft (1,004 servers)

Version Number of Servers Percent
6.0.3790.467535335.16%
8.5.9600.1638416116.04%
10.0.14393.4169908.96%
7.5.7601.17514787.77%
6.0.3790.3959616.08%
5.0.2195.5329515.08%
10.0.17763.1697474.68%
10.0.14393.2608272.69%
8.0.9200.16384272.69%
5.0.2195.6713181.79%
6.0.3790.1830141.39%
10.0.17763.1131.29%
Other646.37%

CommuniGate Pro (460 servers)

Version Number of Servers Percent
6.2.157416.09%
6.2.144810.43%
6.1.20163.48%
6.1.18153.26%
5.2.20143.04%
6.2.12132.83%
6.1.16132.83%
5.4.11132.83%
6.3.5112.39%
6.3.791.96%
6.0.991.96%
6.0.1181.74%
5.1.1671.52%
6.3.671.52%
6.0.761.30%
6.3.361.30%
6.2.751.09%
6.2.1051.09%
6.2.1351.09%
5.2.351.09%
6.1.1251.09%
Other16636.09%

IMail (391 servers)

Version Number of Servers Percent
12.5.8.416717.14%
12.5.7.594311.00%
12.5.6.1014110.49%
12.4.1.15317.93%
9.23235.88%
8.22194.86%
12.5.6.105184.60%
8.05184.60%
12.5.3.93174.35%
8.15153.84%
12.3.0.100153.84%
10.02102.56%
12.5.5.115102.56%
12.5.5.11792.30%
12.5.4.14671.79%
11.561.53%
7.1551.28%
Other379.46%

Qmail Toaster (379 servers)

Version Number of Servers Percent
1.329978.89%
1.037118.73%
1.03.551.32%
Other41.06%

XMail (308 servers)

Version Number of Servers Percent
1.2715750.97%
1.2210233.12%
1.26154.87%
1.25123.90%
1.2482.60%
Other144.55%

SurgeSMTP (231 servers)

Version Number of Servers Percent
7.5c-13716.02%
7.3o4-43314.29%
7.5a-12510.82%
7.3e2-2166.93%
7.4o-1156.49%
7.1e-193.90%
7.4e-173.03%
7.3i2-262.60%
6.7c-152.16%
6.5a2-252.16%
7.5b-2252.16%
7.5d-252.16%
3.9e-141.73%
7.2a-141.73%
7.6e-231.30%
6.9c-131.30%
7.2i-131.30%
Other4619.91%

OpenSMTPD (214 servers)

Version Number of Servers Percent
Other214100.00%

Lotus Domino (108 servers)

Version Number of Servers Percent
8.5.32321.30%
8.5.3FP61614.81%
7.065.56%
8.5.2FP265.56%
7.0.254.63%
7.0.354.63%
8.5.143.70%
8.5.243.70%
8.5.3FP132.78%
8.5.2FP332.78%
5.0.832.78%
8.5.1FP421.85%
7.5.121.85%
8.5.2FP121.85%
8.5.2FP421.85%
5.0.1321.85%
8.5.3FP521.85%
8.521.85%
7.0.3FP121.85%
8.0.121.85%
Other1211.11%

MagicMail (93 servers)

Version Number of Servers Percent
Other93100.00%

WinWebMail (93 servers)

Version Number of Servers Percent
4.2.0.12021.51%
3.9.0.71718.28%
4.3.0.188.60%
3.8.1.377.53%
3.7.3.155.38%
3.8.6.144.30%
3.8.0.144.30%
4.4.0.133.23%
3.7.6.133.23%
1.033.23%
4.0.0.133.23%
4.1.0.133.23%
3.8.5.122.15%
3.7.0.322.15%
3.7.5.122.15%
3.9.1.111.08%
3.7.6.211.08%
3.9.0.111.08%
3.9.5.311.08%
3.8.1.511.08%
3.9.2.211.08%
3.8.1.611.08%
Other00.00%

Merak (55 servers)

Version Number of Servers Percent
8.0.31629.09%
8.9.11527.27%
7.6.1814.55%
7.4.547.27%
8.3.823.64%
8.9.211.82%
6.1.011.82%
8.5.011.82%
9.0.311.82%
4.2.111.82%
5.8.211.82%
8.9.711.82%
7.6.011.82%
6.0.811.82%
8.9.011.82%
Other00.00%

Kerio (48 servers)

Version Number of Servers Percent
6.7.3918.75%
6.6.2816.67%
6.7.0714.58%
6.6.1510.42%
6.7.136.25%
6.5.036.25%
5.7.924.17%
6.7.224.17%
6.5.224.17%
6.5.124.17%
6.0.1012.08%
6.0.812.08%
6.6.012.08%
6.4.112.08%
6.1.012.08%
Other00.00%

Post.Office (47 servers)

Version Number of Servers Percent
4.41531.91%
4.31021.28%
4.2.2919.15%
4.1.2.448.51%
3.5.324.26%
3.9.212.13%
4.1.112.13%
3.5.3J12.13%
4.2.1.112.13%
4.1.0.312.13%
4.112.13%
3.1.212.13%
Other00.00%

GroupWise (30 servers)

Version Number of Servers Percent
18.3.1516.67%
18.2.0413.33%
18.1.1310.00%
18.1.0310.00%
14.0.026.67%
14.2.226.67%
14.2.126.67%
18.2.113.33%
14.2.013.33%
8.0.313.33%
7.0.113.33%
6.5.713.33%
6.5.013.33%
14.2.313.33%
18.0.013.33%
18.0.213.33%
Other00.00%

ArGoSoft (30 servers)

Version Number of Servers Percent
1.8 (1.8.9.5)516.67%
1.8 (1.8.9.6)516.67%
1.8 (1.8.9.3)413.33%
1.8 (1.8.9.1)310.00%
1.8 (1.8.8.8)26.67%
1.8 (1.8.8.7)26.67%
1.8 (1.8.9.2)26.67%
1.8 (1.8.2.1)26.67%
1.8 (1.8.7.3)13.33%
1.8 (1.8.8.4)13.33%
1.8 (1.8.6.0)13.33%
1.8 (1.8.1.7)13.33%
1.8 (1.8.2.5)13.33%
Other00.00%

Gordano Messaging Suite (GMS) (11 servers)

Version Number of Servers Percent
Other11100.00%

Trend Micro (7 servers)

Version Number of Servers Percent
5.18571.43%
5.7114.29%
7.5ready114.29%
Other00.00%

OpenVMS (6 servers)

Version Number of Servers Percent
8.4466.67%
7.3233.33%
Other00.00%

VisNetic (3 servers)

Version Number of Servers Percent
8.0.3133.33%
5.0.1133.33%
9.3.2.0133.33%
Other00.00%

ModusMail (2 servers)

Version Number of Servers Percent
4.1.361.212100.00%
Other00.00%

Interscan (1 servers)

Version Number of Servers Percent
3.8-Build_30131100.00%
Other00.00%

WebSTAR V (1 servers)

Version Number of Servers Percent
5.4.11100.00%
Other00.00%

Mirapoint (1 servers)

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




© 1998-2021 E-Soft Inc. All rights reserved.