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You are viewing an outdated report.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


    
Mail (MX) Server Survey
September 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 Queried786,937   100.0%
Number of Servers that didn't respond132,46616.83%
    Server didn't open socket130,91216.64%
    Server didn't provide banner1,5540.20%
Server provided banner654,47183.17%
Server banner identifies software in use419,03353.25%

As indicated by the above table, of the 786,937 servers queried, only 419,033 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
Exim235,33656.16%
Postfix156,30937.30%
Sendmail14,8993.56%
MailEnable7,6701.83%
MDaemon1,6720.40%
Microsoft7720.18%
CommuniGate Pro5320.13%
OpenSMTPD3940.09%
XMail2980.07%
IMail2460.06%
SurgeSMTP2440.06%
Qmail Toaster1420.03%
MagicMail1160.03%
WinWebMail1010.02%
Lotus Domino890.02%
Kerio470.01%
Merak460.01%
Post.Office450.01%
ArGoSoft270.01%
GroupWise190.00%
Gordano Messaging Suite (GMS)60.00%
OpenVMS50.00%
ModusMail40.00%
VisNetic40.00%
InterScan VirusWall40.00%
Trend Micro30.00%
Mercury10.00%
MessageWall10.00%
Mirapoint10.00%

Detailed Breakdown of Revisions on a Per-Server Basis

Exim (235,336 servers)

Version Number of Servers Percent
4.96.2133,84456.87%
4.97.152,41222.27%
4.969,3663.98%
4.956,2382.65%
4.986,0902.59%
4.935,5622.36%
4.94.24,7692.03%
4.96.12,6711.13%
4.922,4521.04%
Other11,9325.07%

Postfix (156,309 servers)

Version Number of Servers Percent
Other156,309100.00%

Sendmail (14,899 servers)

Version Number of Servers Percent
8.16.15,89839.59%
8.15.23,72725.02%
8.14.71,3058.76%
8.14.41,1517.73%
8.13.85783.88%
8.14.55083.41%
8.18.13622.43%
8.17.12301.54%
8.14.92211.48%
Other9196.17%

MailEnable (7,670 servers)

Version Number of Servers Percent
10.48--2,70335.24%
10.46--1,03713.52%
10.34--2993.90%
10.43--2212.88%
10.25--1832.39%
10.47--1742.27%
10.48--10.481722.24%
10.27--1682.19%
10.48-10.48-1431.86%
10.43-10.43-1351.76%
10.47--10.471281.67%
10.47-10.47-1111.45%
10.42--1001.30%
9.00--871.13%
9.00--9.00801.04%
Other1,92925.15%

MDaemon (1,672 servers)

Version Number of Servers Percent
24.0.123814.23%
19.5.4784.67%
23.5.3714.25%
13.5.1643.83%
13.0.5593.53%
11.0.0593.53%
11.0.3513.05%
13.0.4472.81%
24.0.0452.69%
21.5.4432.57%
16.5.2412.45%
23.5.2402.39%
23.0.2402.39%
23.0.1382.27%
14.5.2372.21%
23.5.1331.97%
12.5.6301.79%
23.5.0291.73%
21.5.2271.61%
22.0.3231.38%
19.5.5201.20%
10.1.2171.02%
Other54232.42%

Microsoft (772 servers)

Version Number of Servers Percent
6.0.3790.467518223.58%
10.0.17763.169714418.65%
10.0.14393.416910213.21%
8.5.9600.163849211.92%
7.5.7601.17514536.87%
6.0.3790.3959415.31%
5.0.2195.5329314.02%
10.0.20348.1212.72%
5.0.2195.6713162.07%
8.0.9200.16384141.81%
6.0.3790.1830111.42%
10.0.17763.1101.30%
Other557.12%

CommuniGate Pro (532 servers)

Version Number of Servers Percent
6.2.15489.02%
6.2.14417.71%
6.4.1336.20%
6.3.18224.14%
6.3.17203.76%
6.3.20173.20%
6.1.20163.01%
6.4.0132.44%
6.0.11122.26%
6.0.9112.07%
6.1.16112.07%
5.4.1191.69%
6.3.1991.69%
6.1.1891.69%
6.3.1481.50%
6.2.1281.50%
6.1.1981.50%
5.1.1681.50%
5.2.2071.32%
6.3.671.32%
6.1.1761.13%
5.2.361.13%
5.1.761.13%
6.3.1361.13%
Other19135.90%

OpenSMTPD (394 servers)

Version Number of Servers Percent
Other394100.00%

XMail (298 servers)

Version Number of Servers Percent
1.2720267.79%
1.226120.47%
1.26113.69%
1.2593.02%
1.2441.34%
1.1531.01%
Other82.68%

IMail (246 servers)

Version Number of Servers Percent
12.6.1.43514.23%
12.5.8.41197.72%
9.23166.50%
12.5.6.105145.69%
12.5.8.59145.69%
12.5.6.101135.28%
12.5.7.59114.47%
8.22114.47%
12.5.8.5893.66%
12.4.1.1583.25%
12.5.3.9383.25%
8.0572.85%
7.0752.03%
12.3.0.10052.03%
12.5.5.11752.03%
11.552.03%
12.5.8.5441.63%
12.6.0.2041.63%
12.5.4.14641.63%
12.5.5.11541.63%
10.0241.63%
12.6.0.1741.63%
8.1541.63%
8.2131.22%
6.0431.22%
5.0531.22%
8.0031.22%
Other218.54%

SurgeSMTP (244 servers)

Version Number of Servers Percent
7.8a-13915.98%
7.3o4-4208.20%
7.8c2-2197.79%
7.7c-1156.15%
7.6j-1156.15%
7.3e2-2135.33%
7.7i-1124.92%
7.5c-1114.51%
7.1e-172.87%
6.5a2-272.87%
6.9c-172.87%
7.5a-162.46%
7.4o-152.05%
7.7h-352.05%
7.6u-152.05%
7.4e-152.05%
7.6h-241.64%
7.2i-141.64%
7.6s-141.64%
7.3i2-231.23%
6.5a-131.23%
7.8b-231.23%
Other3213.11%

Qmail Toaster (142 servers)

Version Number of Servers Percent
1.038962.68%
1.34934.51%
1.03.532.11%
Other10.70%

MagicMail (116 servers)

Version Number of Servers Percent
Other116100.00%

WinWebMail (101 servers)

Version Number of Servers Percent
4.5.0.11716.83%
4.2.0.11514.85%
4.4.0.11413.86%
3.9.0.71110.89%
3.8.1.376.93%
3.8.0.143.96%
4.0.0.143.96%
3.7.3.143.96%
4.3.0.132.97%
3.9.2.132.97%
3.7.6.121.98%
3.8.1.521.98%
3.8.5.121.98%
3.8.6.121.98%
3.9.0.121.98%
4.1.0.121.98%
Other76.93%

Lotus Domino (89 servers)

Version Number of Servers Percent
8.5.3FP61921.35%
8.5.31719.10%
7.044.49%
8.5.233.37%
8.5.133.37%
8.5.3FP522.25%
8.5.2FP122.25%
8.522.25%
8.5.2FP222.25%
6.5.222.25%
7.0.322.25%
6.522.25%
8.5.3FP322.25%
7.0.4FP222.25%
6.5.322.25%
7.5.122.25%
7.0.222.25%
7.0.3FP122.25%
8.0.122.25%
8.5.3FP211.12%
8.5.3FP111.12%
8.5.3FP6HF121511.12%
6.5.411.12%
6.5.111.12%
6.0.111.12%
5.0.13a11.12%
5.0.811.12%
7.0.4FP111.12%
8.011.12%
8.5.1FP511.12%
8.5.2FP411.12%
6.6.611.12%
8.5.1FP211.12%
5.0.1311.12%
Other00.00%

Kerio (47 servers)

Version Number of Servers Percent
6.7.3919.15%
6.7.0612.77%
6.6.1510.64%
6.6.2510.64%
6.5.2510.64%
6.7.148.51%
5.7.924.26%
6.5.124.26%
6.4.124.26%
6.6.024.26%
6.0.1012.13%
5.7.612.13%
6.0.812.13%
6.7.212.13%
6.3.012.13%
Other00.00%

Merak (46 servers)

Version Number of Servers Percent
8.0.31328.26%
8.9.11123.91%
7.6.1715.22%
8.3.836.52%
8.0.112.17%
8.9.212.17%
6.1.012.17%
7.4.512.17%
9.0.312.17%
8.5.012.17%
7.5.212.17%
4.2.112.17%
7.6.012.17%
7.4.412.17%
6.0.812.17%
5.8.212.17%
Other00.00%

Post.Office (45 servers)

Version Number of Servers Percent
4.41942.22%
4.2.2920.00%
3.5.3511.11%
4.3511.11%
4.1.2.424.44%
4.212.22%
4.0.112.22%
3.9.212.22%
3.1.212.22%
4.2.1.112.22%
Other00.00%

ArGoSoft (27 servers)

Version Number of Servers Percent
1.8 (1.8.9.6)933.33%
1.8 (1.8.9.5)518.52%
1.8 (1.8.9.3)311.11%
1.8 (1.8.8.8)27.41%
1.8 (1.8.7.3)27.41%
1.8 (1.8.8.7)27.41%
1.8 (1.8.9.2)27.41%
1.8 (1.8.9.1)27.41%
Other00.00%

GroupWise (19 servers)

Version Number of Servers Percent
24.2.0421.05%
18.3.1315.79%
14.2.115.26%
18.1.115.26%
14.2.315.26%
6.5.015.26%
18.4.115.26%
18.2.115.26%
24.3.015.26%
18.4.215.26%
14.2.215.26%
18.0.215.26%
18.5.015.26%
23.4.015.26%
Other00.00%

Gordano Messaging Suite (GMS) (6 servers)

Version Number of Servers Percent
Other6100.00%

OpenVMS (5 servers)

Version Number of Servers Percent
8.4240.00%
7.3240.00%
8.2120.00%
Other00.00%

ModusMail (4 servers)

Version Number of Servers Percent
4.1.361.214100.00%
Other00.00%

VisNetic (4 servers)

Version Number of Servers Percent
9.3.2.0250.00%
8.0.3125.00%
6.2.2.0125.00%
Other00.00%

InterScan VirusWall (4 servers)

Version Number of Servers Percent
Other4100.00%

Trend Micro (3 servers)

Version Number of Servers Percent
5.18266.67%
5.5133.33%
Other00.00%

Mercury (1 servers)

Version Number of Servers Percent
1.481100.00%
Other00.00%

MessageWall (1 servers)

Version Number of Servers Percent
1.0.81100.00%
Other00.00%

Mirapoint (1 servers)

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



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