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You are viewing an outdated report.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


    
Mail (MX) Server Survey
November 1st, 2022

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 Queried747,247   100.0%
Number of Servers that didn't respond129,95217.39%
    Server didn't open socket126,41116.92%
    Server didn't provide banner3,5410.47%
Server provided banner617,29582.61%
Server banner identifies software in use427,65557.23%

As indicated by the above table, of the 747,247 servers queried, only 427,655 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
Exim260,45260.90%
Postfix138,96232.49%
Sendmail15,0113.51%
MailEnable8,1761.91%
MDaemon1,7820.42%
Microsoft8360.20%
CommuniGate Pro4830.11%
Qmail Toaster4270.10%
IMail3220.08%
XMail2820.07%
OpenSMTPD2430.06%
SurgeSMTP2100.05%
MagicMail920.02%
Lotus Domino880.02%
WinWebMail670.02%
Merak560.01%
Post.Office450.01%
Kerio430.01%
ArGoSoft260.01%
GroupWise200.00%
Gordano Messaging Suite (GMS)110.00%
OpenVMS50.00%
VisNetic50.00%
Trend Micro40.00%
ModusMail20.00%
Neon Mail Server20.00%
Interscan10.00%
Mercury10.00%
Mirapoint10.00%

Detailed Breakdown of Revisions on a Per-Server Basis

Exim (260,452 servers)

Version Number of Servers Percent
4.95189,83372.89%
4.94.219,5947.52%
4.9313,5085.19%
4.9613,4435.16%
4.923,8161.47%
4.943,0111.16%
Other17,2476.62%

Postfix (138,962 servers)

Version Number of Servers Percent
Other138,962100.00%

Sendmail (15,011 servers)

Version Number of Servers Percent
8.15.25,82138.78%
8.16.13,58623.89%
8.14.71,60010.66%
8.14.41,52010.13%
8.13.87404.93%
8.14.54282.85%
8.14.92351.57%
8.17.12181.45%
8.13.12171.45%
Other6464.30%

MailEnable (8,176 servers)

Version Number of Servers Percent
10.34--3,62744.36%
10.27--4105.01%
10.25--3324.06%
9.00--1762.15%
10.37--1682.05%
10.39--1181.44%
10.31-10.31-1131.38%
10.31--1121.37%
10.40--981.20%
9.00--9.00961.17%
Other2,92635.79%

MDaemon (1,782 servers)

Version Number of Servers Percent
22.0.318810.55%
13.5.11206.73%
21.5.21196.68%
13.0.5864.83%
22.0.2764.26%
11.0.3623.48%
11.0.0613.42%
13.0.4563.14%
14.5.2432.41%
16.5.2432.41%
19.5.4402.24%
12.5.6341.91%
19.5.5331.85%
21.5.1301.68%
22.0.0281.57%
21.0.3271.52%
21.0.1241.35%
10.0.0231.29%
9.6.6201.12%
12.5.4191.07%
22.0.1181.01%
Other63235.47%

Microsoft (836 servers)

Version Number of Servers Percent
6.0.3790.467523528.11%
8.5.9600.1638413115.67%
10.0.14393.41699611.48%
10.0.17763.16978910.65%
7.5.7601.17514688.13%
5.0.2195.5329455.38%
6.0.3790.3959414.90%
8.0.9200.16384252.99%
5.0.2195.6713141.67%
7.0.6002.18264121.44%
10.0.17763.1101.20%
6.0.3790.183091.08%
Other617.30%

CommuniGate Pro (483 servers)

Version Number of Servers Percent
6.2.155912.22%
6.2.145110.56%
6.1.20224.55%
6.3.14183.73%
6.1.16142.90%
6.3.15142.90%
6.1.18122.48%
5.4.11102.07%
6.0.11102.07%
6.0.9102.07%
6.2.1291.86%
5.2.2091.86%
6.3.1391.86%
6.3.681.66%
7.1.171.45%
6.3.571.45%
6.3.1161.24%
7.1.251.04%
6.3.1051.04%
6.1.1251.04%
5.1.1651.04%
6.2.751.04%
6.2.1051.04%
6.1.1951.04%
Other17335.82%

Qmail Toaster (427 servers)

Version Number of Servers Percent
1.334881.50%
1.037317.10%
1.03.551.17%
Other10.23%

IMail (322 servers)

Version Number of Servers Percent
12.5.8.414012.42%
12.5.7.59309.32%
12.5.6.101268.07%
9.23226.83%
12.6.0.17185.59%
12.5.8.58164.97%
12.5.8.59154.66%
12.4.1.15134.04%
8.05134.04%
8.22123.73%
12.5.3.93123.73%
12.5.6.105123.73%
8.15123.73%
12.3.0.100113.42%
10.02113.42%
12.5.8.5492.80%
12.5.4.14651.55%
11.541.24%
11.0341.24%
Other3711.49%

XMail (282 servers)

Version Number of Servers Percent
1.2716157.09%
1.227426.24%
1.25144.96%
1.26124.26%
1.2482.84%
1.1562.13%
Other72.48%

OpenSMTPD (243 servers)

Version Number of Servers Percent
Other243100.00%

SurgeSMTP (210 servers)

Version Number of Servers Percent
7.6j-14119.52%
7.3o4-42511.90%
7.3e2-2146.67%
7.5c-1115.24%
7.6h-2115.24%
7.6s-1104.76%
7.1e-194.29%
7.6m-194.29%
7.4o-183.81%
7.5a-183.81%
6.5a2-262.86%
7.6d-162.86%
7.4e-141.90%
6.9c-131.43%
3.9e-131.43%
6.7c-131.43%
Other3918.57%

MagicMail (92 servers)

Version Number of Servers Percent
Other92100.00%

Lotus Domino (88 servers)

Version Number of Servers Percent
8.5.32123.86%
8.5.3FP61517.05%
7.055.68%
7.0.355.68%
8.5.2FP255.68%
7.0.233.41%
6.522.27%
8.5.2FP122.27%
8.5.3FP122.27%
8.5.1FP522.27%
8.5.122.27%
8.5.2FP322.27%
7.5.122.27%
5.0.1311.14%
8.5.3FP6HF121511.14%
8.011.14%
6.5.411.14%
6.5.111.14%
6.0.111.14%
8.5.3FP511.14%
8.5.211.14%
8.5.2FP411.14%
5.0.811.14%
8.5.3FP411.14%
7.0.4FP111.14%
5.0.1111.14%
8.5.1FP311.14%
8.0.111.14%
6.5.211.14%
7.0.3FP111.14%
6.5.4FP211.14%
7.0.4FP211.14%
6.5.311.14%
Other00.00%

WinWebMail (67 servers)

Version Number of Servers Percent
3.9.0.71319.40%
4.4.0.11319.40%
4.2.0.11014.93%
4.3.0.157.46%
3.8.6.157.46%
3.7.3.145.97%
3.8.1.334.48%
3.7.6.122.99%
3.8.5.122.99%
3.8.1.522.99%
3.8.3.111.49%
1.011.49%
3.7.6.211.49%
3.9.2.111.49%
4.1.0.111.49%
3.8.1.611.49%
3.9.2.211.49%
3.7.5.111.49%
Other00.00%

Merak (56 servers)

Version Number of Servers Percent
8.0.31526.79%
8.9.11221.43%
7.6.1712.50%
8.3.858.93%
7.4.535.36%
9.0.323.57%
8.0.111.79%
8.9.211.79%
8.3.611.79%
6.1.011.79%
4.2.111.79%
8.9.711.79%
7.6.011.79%
7.4.411.79%
6.0.811.79%
7.0.111.79%
8.9.011.79%
5.8.211.79%
Other00.00%

Post.Office (45 servers)

Version Number of Servers Percent
4.41431.11%
4.31022.22%
4.2.2817.78%
4.1.2.436.67%
3.5.336.67%
3.9.212.22%
4.212.22%
4.1.112.22%
3.5.3J12.22%
4.112.22%
3.1.212.22%
4.2.1.112.22%
Other00.00%

Kerio (43 servers)

Version Number of Servers Percent
6.7.3716.28%
6.6.2613.95%
6.6.1511.63%
6.7.0511.63%
6.5.2511.63%
6.7.149.30%
6.7.236.98%
5.7.924.65%
6.5.124.65%
6.0.1012.33%
6.0.812.33%
6.5.012.33%
6.4.112.33%
Other00.00%

ArGoSoft (26 servers)

Version Number of Servers Percent
1.8 (1.8.9.6)623.08%
1.8 (1.8.8.8)311.54%
1.8 (1.8.9.5)311.54%
1.8 (1.8.9.3)311.54%
1.8 (1.8.9.2)27.69%
1.8 (1.8.7.3)13.85%
1.8 (1.8.7.6)13.85%
1.8 (1.8.8.4)13.85%
1.8 (1.8.6.0)13.85%
1.8 (1.8.9.1)13.85%
1.8 (1.8.8.7)13.85%
1.8 (1.8.9.4)13.85%
1.8 (1.8.2.1)13.85%
1.8 (1.8.2.5)13.85%
Other00.00%

GroupWise (20 servers)

Version Number of Servers Percent
18.4.0525.00%
18.1.1315.00%
18.3.1315.00%
18.2.1210.00%
14.2.115.00%
18.0.015.00%
6.5.015.00%
14.2.015.00%
8.0.315.00%
18.0.215.00%
14.2.215.00%
Other00.00%

Gordano Messaging Suite (GMS) (11 servers)

Version Number of Servers Percent
Other11100.00%

OpenVMS (5 servers)

Version Number of Servers Percent
8.4480.00%
7.3120.00%
Other00.00%

VisNetic (5 servers)

Version Number of Servers Percent
9.3.2.0360.00%
8.0.3120.00%
5.0.1120.00%
Other00.00%

Trend Micro (4 servers)

Version Number of Servers Percent
5.18375.00%
5.7125.00%
Other00.00%

ModusMail (2 servers)

Version Number of Servers Percent
4.1.361.212100.00%
Other00.00%

Neon Mail Server (2 servers)

Version Number of Servers Percent
3.0.7150.00%
3.1.2150.00%
Other00.00%

Interscan (1 servers)

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

Mercury (1 servers)

Version Number of Servers Percent
1.481100.00%
Other00.00%

Mirapoint (1 servers)

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




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