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You are viewing an outdated report.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


    
Mail (MX) Server Survey
November 1st, 2024

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 Queried1,077,495   100.0%
Number of Servers that didn't respond226,07420.98%
    Server didn't open socket223,58220.75%
    Server didn't provide banner2,4920.23%
Server provided banner851,42179.02%
Server banner identifies software in use541,27650.23%

As indicated by the above table, of the 1,077,495 servers queried, only 541,276 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
Exim303,24356.02%
Postfix203,02637.51%
Sendmail18,6323.44%
MailEnable9,9461.84%
MDaemon2,1990.41%
Microsoft1,1050.20%
CommuniGate Pro7020.13%
OpenSMTPD5220.10%
XMail4050.07%
IMail3510.06%
SurgeSMTP2920.05%
Qmail Toaster1860.03%
MagicMail1470.03%
WinWebMail1280.02%
Lotus Domino1150.02%
Kerio630.01%
Post.Office580.01%
Merak530.01%
ArGoSoft360.01%
GroupWise300.01%
Gordano Messaging Suite (GMS)140.00%
OpenVMS60.00%
InterScan VirusWall50.00%
VisNetic30.00%
Trend Micro30.00%
ModusMail20.00%
MessageWall20.00%
Mercury10.00%
Mirapoint10.00%

Detailed Breakdown of Revisions on a Per-Server Basis

Exim (303,243 servers)

Version Number of Servers Percent
4.96.2164,97054.40%
4.97.173,39324.20%
4.9811,3533.74%
4.9610,7843.56%
4.957,6922.54%
4.937,5002.47%
4.94.25,9981.98%
4.96.13,1181.03%
4.923,1161.03%
Other15,3195.05%

Postfix (203,026 servers)

Version Number of Servers Percent
Other203,026100.00%

Sendmail (18,632 servers)

Version Number of Servers Percent
8.16.17,32339.30%
8.15.24,37223.47%
8.14.71,90910.25%
8.14.41,4547.80%
8.13.87423.98%
8.14.56183.32%
8.18.15492.95%
8.14.92531.36%
8.17.12491.34%
Other1,1636.24%

MailEnable (9,946 servers)

Version Number of Servers Percent
10.48--3,65436.74%
10.46--1,26212.69%
10.34--3483.50%
10.43--2592.60%
10.47--2352.36%
10.25--2312.32%
10.27--2052.06%
10.48--10.481791.80%
10.43-10.43-1531.54%
10.48-10.48-1341.35%
10.42--1281.29%
10.47--10.471271.28%
9.00--1261.27%
10.47-10.47-1221.23%
Other2,78327.98%

MDaemon (2,199 servers)

Version Number of Servers Percent
24.0.224110.96%
24.0.11084.91%
13.5.1954.32%
19.5.4813.68%
13.0.4783.55%
13.0.5733.32%
11.0.0713.23%
11.0.3683.09%
24.5.0683.09%
23.5.3622.82%
23.0.2582.64%
16.5.2532.41%
21.5.4512.32%
14.5.2442.00%
12.5.6371.68%
23.0.1371.68%
23.5.1351.59%
21.5.2341.55%
23.5.2331.50%
23.5.0331.50%
19.5.5301.36%
24.0.0281.27%
10.1.2261.18%
22.0.3231.05%
Other73233.29%

Microsoft (1,105 servers)

Version Number of Servers Percent
6.0.3790.467526523.98%
10.0.17763.169722120.00%
10.0.14393.416913512.22%
8.5.9600.1638412911.67%
7.5.7601.17514726.52%
6.0.3790.3959655.88%
5.0.2195.5329504.52%
10.0.20348.1332.99%
5.0.2195.6713211.90%
8.0.9200.16384201.81%
10.0.17763.1141.27%
6.0.3790.1830131.18%
Other676.06%

CommuniGate Pro (702 servers)

Version Number of Servers Percent
6.2.15557.83%
6.2.14466.55%
6.4.1365.13%
6.3.20253.56%
6.1.20253.56%
6.3.17253.56%
6.4.0212.99%
6.3.18212.99%
6.0.11141.99%
6.1.16131.85%
5.4.11121.71%
6.0.9121.71%
5.2.20111.57%
6.1.18111.57%
6.3.19101.42%
6.3.14101.42%
6.3.37101.42%
6.2.1291.28%
6.3.691.28%
5.1.1691.28%
Other31845.30%

OpenSMTPD (522 servers)

Version Number of Servers Percent
Other522100.00%

XMail (405 servers)

Version Number of Servers Percent
1.2726364.94%
1.229022.22%
1.26184.44%
1.25122.96%
1.24102.47%
Other122.96%

IMail (351 servers)

Version Number of Servers Percent
12.6.1.47421.08%
9.23267.41%
12.5.8.41246.84%
12.5.8.59226.27%
12.5.6.101195.41%
12.5.7.59164.56%
12.5.6.105154.27%
12.5.3.93143.99%
8.22143.99%
8.05133.70%
12.4.1.15123.42%
12.5.8.58113.13%
12.5.4.14682.28%
12.5.5.11561.71%
7.0761.71%
12.3.0.10061.71%
12.5.8.5451.42%
8.0051.42%
12.6.0.1751.42%
11.551.42%
12.6.0.2041.14%
10.0241.14%
12.5.5.11741.14%
Other339.40%

SurgeSMTP (292 servers)

Version Number of Servers Percent
7.8a-14515.41%
7.8c2-2268.90%
7.3o4-4227.53%
7.7c-1206.85%
7.8g-1186.16%
7.6j-1175.82%
7.5c-1144.79%
7.3e2-2113.77%
7.7i-1103.42%
7.1e-1103.42%
7.4e-182.74%
6.9c-182.74%
7.5a-172.40%
6.5a2-272.40%
7.4o-162.05%
7.6u-151.71%
7.2i-151.71%
7.4m-141.37%
7.6h-241.37%
7.7h-331.03%
7.8h-431.03%
7.6s-131.03%
7.8b-231.03%
6.5a-131.03%
Other3010.27%

Qmail Toaster (186 servers)

Version Number of Servers Percent
1.0311762.90%
1.36333.87%
1.03.542.15%
1.03.621.08%
Other00.00%

MagicMail (147 servers)

Version Number of Servers Percent
Other147100.00%

WinWebMail (128 servers)

Version Number of Servers Percent
4.5.0.12015.62%
3.8.1.31511.72%
4.4.0.11511.72%
4.2.0.11511.72%
3.9.0.7129.38%
4.0.0.175.47%
4.1.0.164.69%
4.3.0.164.69%
3.9.0.143.12%
3.9.3.132.34%
3.7.7.332.34%
3.7.3.132.34%
3.8.1.521.56%
3.8.0.121.56%
3.9.5.321.56%
3.8.6.121.56%
3.7.1.121.56%
3.8.1.121.56%
Other75.47%

Lotus Domino (115 servers)

Version Number of Servers Percent
8.5.3FP62320.00%
8.5.32219.13%
8.554.35%
6.554.35%
8.5.154.35%
7.043.48%
8.5.2FP143.48%
8.5.243.48%
8.5.3FP343.48%
7.0.243.48%
6.5.132.61%
6.5.332.61%
8.032.61%
6.5.221.74%
7.0.321.74%
7.0.4FP221.74%
7.5.121.74%
7.0.3FP121.74%
Other1613.91%

Kerio (63 servers)

Version Number of Servers Percent
6.7.31219.05%
6.7.0914.29%
6.6.2812.70%
6.6.1812.70%
6.7.157.94%
6.7.246.35%
6.5.246.35%
5.7.923.17%
6.5.123.17%
6.4.111.59%
6.0.1011.59%
5.7.611.59%
6.0.811.59%
6.3.111.59%
6.6.011.59%
6.4.011.59%
6.3.011.59%
6.5.011.59%
Other00.00%

Post.Office (58 servers)

Version Number of Servers Percent
4.42441.38%
4.2.21017.24%
4.358.62%
3.5.358.62%
4.1.2.446.90%
3.5.135.17%
4.2.1.323.45%
4.2.1.123.45%
4.211.72%
3.9.211.72%
3.1.211.72%
Other00.00%

Merak (53 servers)

Version Number of Servers Percent
8.9.11426.42%
8.0.31324.53%
7.6.1815.09%
8.3.835.66%
7.4.523.77%
7.6.423.77%
6.0.823.77%
8.0.111.89%
8.9.211.89%
6.1.011.89%
9.0.311.89%
8.5.011.89%
7.5.211.89%
7.6.011.89%
7.4.411.89%
5.8.211.89%
Other00.00%

ArGoSoft (36 servers)

Version Number of Servers Percent
1.8 (1.8.9.6)1130.56%
1.8 (1.8.9.3)513.89%
1.8 (1.8.9.5)513.89%
1.8 (1.8.9.1)38.33%
1.8 (1.8.8.8)25.56%
1.8 (1.8.7.3)25.56%
1.8 (1.8.8.7)25.56%
1.8 (1.8.9.2)25.56%
1.8 (1.8.6.1)12.78%
1.8 (1.8.3.5)12.78%
1.8 (1.8.5.9)12.78%
1.8 (1.8.8.9)12.78%
Other00.00%

GroupWise (30 servers)

Version Number of Servers Percent
24.2.0516.67%
24.3.0516.67%
18.3.1413.33%
18.2.1310.00%
18.1.126.67%
18.5.026.67%
18.2.026.67%
14.2.113.33%
24.1.013.33%
14.2.313.33%
6.5.013.33%
18.4.113.33%
18.0.213.33%
14.0.013.33%
Other00.00%

Gordano Messaging Suite (GMS) (14 servers)

Version Number of Servers Percent
Other14100.00%

OpenVMS (6 servers)

Version Number of Servers Percent
7.3350.00%
8.4233.33%
8.2116.67%
Other00.00%

InterScan VirusWall (5 servers)

Version Number of Servers Percent
Other5100.00%

VisNetic (3 servers)

Version Number of Servers Percent
9.3.2.0266.67%
8.0.3133.33%
Other00.00%

Trend Micro (3 servers)

Version Number of Servers Percent
5.18266.67%
5.5133.33%
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%

Mercury (1 servers)

Version Number of Servers Percent
4.x1100.00%
Other00.00%

Mirapoint (1 servers)

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




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