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Mail (MX) Server Survey
April 1st, 2008
Report Description |
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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 |
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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 Queried | 1,844,209 | 100.0% |
Number of Servers that didn't respond | 281,442 | 15.26% |
Server didn't open socket | 270,384 | 14.66% |
Server didn't provide banner | 11,058 | 0.60% |
Server provided banner | 1,562,767 | 84.74% |
Server banner identifies software in use | 926,844 | 50.26% |
As indicated by the above table, of the 1,844,209 servers
queried, only 926,844 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 |
Sendmail | 240,254 | 25.92% |
Exim | 207,801 | 22.42% |
Microsoft | 205,319 | 22.15% |
Postfix | 150,372 | 16.22% |
IMail | 25,639 | 2.77% |
MailEnable | 23,709 | 2.56% |
MDaemon | 23,186 | 2.50% |
Lotus Domino | 7,036 | 0.76% |
Merak | 6,378 | 0.69% |
Kerio | 5,645 | 0.61% |
WinWebMail | 4,906 | 0.53% |
CommuniGate Pro | 4,903 | 0.53% |
Trend Micro | 3,322 | 0.36% |
GroupWise | 3,041 | 0.33% |
XMail | 2,713 | 0.29% |
ArGoSoft | 2,654 | 0.29% |
SurgeSMTP | 1,758 | 0.19% |
Qmail Toaster | 1,661 | 0.18% |
Gordano Messaging Suite (GMS) | 1,008 | 0.11% |
Post.Office | 951 | 0.10% |
NetIQ MailMarshal | 722 | 0.08% |
InterScan VirusWall | 688 | 0.07% |
Mirapoint | 579 | 0.06% |
Interscan | 547 | 0.06% |
VisNetic | 544 | 0.06% |
MagicMail | 373 | 0.04% |
ModusMail | 227 | 0.02% |
WebSTAR V | 216 | 0.02% |
Mercury | 202 | 0.02% |
Neon Mail Server | 183 | 0.02% |
MAILsweeper | 98 | 0.01% |
MessageWall | 89 | 0.01% |
WebSTAR | 87 | 0.01% |
OpenVMS | 33 | 0.00% |
Detailed Breakdown of Revisions on a Per-Server Basis |
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Sendmail (240,254 servers) |
|
|
Version |
Number of Servers |
Percent |
8.12.11.20060614 | 35,803 | 14.90% |
8.13.1 | 32,448 | 13.51% |
8.12.11.20060308 | 25,648 | 10.68% |
8.13.6 | 22,967 | 9.56% |
8.11.6 | 20,230 | 8.42% |
8.13.8 | 16,846 | 7.01% |
8.12.10 | 14,471 | 6.02% |
8.13.6.20060614 | 10,720 | 4.46% |
8.14.1 | 9,441 | 3.93% |
8.12.11 | 8,683 | 3.61% |
8.13.4 | 7,401 | 3.08% |
8.12.8 | 6,389 | 2.66% |
8.13.7 | 5,832 | 2.43% |
8.14.2 | 4,941 | 2.06% |
8.9.3 | 3,572 | 1.49% |
8.10.2 | 3,172 | 1.32% |
Other | 11,690 | 4.87% |
Exim (207,801 servers) |
|
|
Version |
Number of Servers |
Percent |
4.68 | 135,343 | 65.13% |
4.63 | 30,193 | 14.53% |
4.60 | 6,962 | 3.35% |
4.66 | 5,997 | 2.89% |
4.50 | 5,978 | 2.88% |
4.67 | 5,939 | 2.86% |
4.62 | 4,130 | 1.99% |
4.69 | 3,269 | 1.57% |
Other | 9,990 | 4.81% |
Microsoft (205,319 servers) |
|
|
Version |
Number of Servers |
Percent |
6.0.3790.3959 | 125,937 | 61.34% |
6.0.3790.1830 | 47,551 | 23.16% |
5.0.2195.6713 | 19,502 | 9.50% |
6.0.3790.211 | 7,522 | 3.66% |
Other | 4,807 | 2.34% |
Postfix (150,372 servers) |
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|
Version |
Number of Servers |
Percent |
Other | 150,372 | 100.00% |
IMail (25,639 servers) |
|
|
Version |
Number of Servers |
Percent |
8.22 | 5,214 | 20.34% |
8.15 | 4,626 | 18.04% |
9.23 | 2,268 | 8.85% |
8.05 | 1,677 | 6.54% |
9.10 | 1,511 | 5.89% |
9.21 | 1,276 | 4.98% |
7.07 | 1,050 | 4.10% |
7.15 | 927 | 3.62% |
9.22 | 912 | 3.56% |
9.20 | 697 | 2.72% |
6.06 | 689 | 2.69% |
8.21 | 621 | 2.42% |
8.00 | 571 | 2.23% |
8.20 | 358 | 1.40% |
8.04 | 351 | 1.37% |
8.10 | 317 | 1.24% |
8.01 | 316 | 1.23% |
Other | 2,258 | 8.81% |
MailEnable (23,709 servers) |
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|
Version |
Number of Servers |
Percent |
1.981-- | 6,041 | 25.48% |
1.983-- | 2,557 | 10.78% |
1.96-- | 1,716 | 7.24% |
1.95-- | 1,510 | 6.37% |
1.9-- | 1,301 | 5.49% |
1.8-- | 1,068 | 4.50% |
0-1.85- | 1,046 | 4.41% |
0-2.37- | 929 | 3.92% |
0-3.04- | 564 | 2.38% |
0-2.38- | 528 | 2.23% |
0-2.36- | 465 | 1.96% |
0-2.40- | 372 | 1.57% |
0--2.37 | 366 | 1.54% |
0--2.38 | 319 | 1.35% |
0-3.12- | 269 | 1.13% |
0--3.04 | 265 | 1.12% |
Other | 4,393 | 18.53% |
MDaemon (23,186 servers) |
|
|
Version |
Number of Servers |
Percent |
9.6.4 | 5,519 | 23.80% |
9.6.2 | 1,607 | 6.93% |
9.6.3 | 1,488 | 6.42% |
9.6.1 | 1,299 | 5.60% |
9.5.6 | 1,173 | 5.06% |
8.1.3 | 1,045 | 4.51% |
9.0.4 | 983 | 4.24% |
9.5.2 | 776 | 3.35% |
9.5.1 | 706 | 3.04% |
6.8.5 | 632 | 2.73% |
7.2.3 | 573 | 2.47% |
7.2.0 | 466 | 2.01% |
9.0.1 | 465 | 2.01% |
9.5.5 | 394 | 1.70% |
9.0.0 | 383 | 1.65% |
8.1.4 | 381 | 1.64% |
8.0.2 | 372 | 1.60% |
9.5.4 | 360 | 1.55% |
8.1.1 | 317 | 1.37% |
9.6.0 | 307 | 1.32% |
8.0.3 | 265 | 1.14% |
9.5.3 | 264 | 1.14% |
7.1.2 | 264 | 1.14% |
8.1.5 | 252 | 1.09% |
Other | 2,895 | 12.49% |
Lotus Domino (7,036 servers) |
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|
Version |
Number of Servers |
Percent |
7.0.2 | 919 | 13.06% |
7.0.2FP2 | 476 | 6.77% |
6.5.4 | 471 | 6.69% |
7.0.1 | 459 | 6.52% |
6.5.1 | 398 | 5.66% |
8.0 | 378 | 5.37% |
6.5.3 | 354 | 5.03% |
7.0.3 | 341 | 4.85% |
6.5.5 | 304 | 4.32% |
7.0 | 298 | 4.24% |
7.0.2FP1 | 243 | 3.45% |
6.5 | 242 | 3.44% |
5.0.11 | 165 | 2.35% |
6.5.2 | 153 | 2.17% |
8.0.1 | 113 | 1.61% |
5.0.12 | 102 | 1.45% |
5.0.8 | 99 | 1.41% |
6.5.5FP2 | 93 | 1.32% |
5.0.13a | 89 | 1.26% |
6.5.6 | 88 | 1.25% |
5.0.10 | 88 | 1.25% |
7.0.1FP1 | 85 | 1.21% |
6.0.2CF1 | 73 | 1.04% |
6.5.4FP3 | 72 | 1.02% |
6.5.4FP2 | 71 | 1.01% |
Other | 862 | 12.25% |
Merak (6,378 servers) |
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|
Version |
Number of Servers |
Percent |
8.0.3 | 2,143 | 33.60% |
8.9.1 | 810 | 12.70% |
8.5.0 | 478 | 7.49% |
7.4.5 | 318 | 4.99% |
7.5.2 | 296 | 4.64% |
8.3.8 | 292 | 4.58% |
7.6.4 | 265 | 4.15% |
9.0.0 | 195 | 3.06% |
7.4.2 | 151 | 2.37% |
7.2.0 | 115 | 1.80% |
8.2.4 | 100 | 1.57% |
6.2.1 | 88 | 1.38% |
8.9.0 | 80 | 1.25% |
7.6.1 | 76 | 1.19% |
8.3.0 | 73 | 1.14% |
7.4.0 | 67 | 1.05% |
Other | 831 | 13.03% |
Kerio (5,645 servers) |
|
|
Version |
Number of Servers |
Percent |
6.4.2 | 1,094 | 19.38% |
6.4.1 | 1,045 | 18.51% |
6.3.1 | 793 | 14.05% |
6.5.0 | 621 | 11.00% |
6.4.0 | 557 | 9.87% |
6.3.0 | 261 | 4.62% |
6.2.2 | 122 | 2.16% |
6.1.3 | 112 | 1.98% |
6.2.0 | 100 | 1.77% |
6.1.2 | 97 | 1.72% |
6.1.0 | 95 | 1.68% |
6.0.10 | 86 | 1.52% |
6.1.4 | 83 | 1.47% |
6.0.3 | 72 | 1.28% |
6.1.1 | 57 | 1.01% |
Other | 450 | 7.97% |
WinWebMail (4,906 servers) |
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|
Version |
Number of Servers |
Percent |
3.7.3.1 | 1,617 | 32.96% |
3.7.1.1 | 893 | 18.20% |
3.7.5.1 | 643 | 13.11% |
3.6.3.1 | 487 | 9.93% |
3.7.0.5 | 411 | 8.38% |
3.7.6.1 | 279 | 5.69% |
3.7.0.7 | 266 | 5.42% |
3.7.0.3 | 253 | 5.16% |
Other | 57 | 1.16% |
CommuniGate Pro (4,903 servers) |
|
|
Version |
Number of Servers |
Percent |
4.1.8 | 516 | 10.52% |
4.2.10 | 331 | 6.75% |
5.1.13 | 324 | 6.61% |
5.1.12 | 300 | 6.12% |
5.1.14 | 261 | 5.32% |
5.2.0 | 223 | 4.55% |
5.1.10 | 197 | 4.02% |
5.0.9 | 167 | 3.41% |
5.0.13 | 160 | 3.26% |
5.1.9 | 126 | 2.57% |
5.1.11 | 120 | 2.45% |
5.1.7 | 116 | 2.37% |
5.1.8 | 109 | 2.22% |
4.2.8 | 91 | 1.86% |
4.2.7 | 84 | 1.71% |
4.2 | 78 | 1.59% |
5.1.5 | 77 | 1.57% |
4.3.12 | 75 | 1.53% |
5.0.11 | 73 | 1.49% |
4.0.6 | 71 | 1.45% |
4.2.9 | 69 | 1.41% |
5.0.8 | 68 | 1.39% |
5.2 | 65 | 1.33% |
5.0.14 | 57 | 1.16% |
5.1.3 | 57 | 1.16% |
4.3.8 | 56 | 1.14% |
Other | 1,032 | 21.05% |
Trend Micro (3,322 servers) |
|
|
Version |
Number of Servers |
Percent |
5.7 | 1,536 | 46.24% |
5.5 | 1,228 | 36.97% |
5.18 | 427 | 12.85% |
7.0 | 77 | 2.32% |
Other | 54 | 1.63% |
GroupWise (3,041 servers) |
|
|
Version |
Number of Servers |
Percent |
7.0.2 | 1,073 | 35.28% |
7.0.1 | 420 | 13.81% |
6.5.7 | 370 | 12.17% |
6.5.4 | 227 | 7.46% |
6.5.6 | 166 | 5.46% |
6.0.4 | 143 | 4.70% |
7.0 | 113 | 3.72% |
6.5.5 | 107 | 3.52% |
6.5.1 | 100 | 3.29% |
7.0.3 | 45 | 1.48% |
6.5.2 | 44 | 1.45% |
6.0.2 | 39 | 1.28% |
6.5.3 | 37 | 1.22% |
6.0.3 | 34 | 1.12% |
Other | 123 | 4.04% |
XMail (2,713 servers) |
|
|
Version |
Number of Servers |
Percent |
1.22 | 886 | 32.66% |
1.24 | 610 | 22.48% |
1.21 | 329 | 12.13% |
1.25 | 224 | 8.26% |
1.20 | 147 | 5.42% |
1.17 | 139 | 5.12% |
1.23 | 125 | 4.61% |
1.12 | 83 | 3.06% |
1.16 | 43 | 1.58% |
1.18 | 36 | 1.33% |
Other | 91 | 3.35% |
ArGoSoft (2,654 servers) |
|
|
Version |
Number of Servers |
Percent |
1.8 (1.8.9.3) | 558 | 21.02% |
1.8 (1.8.9.1) | 471 | 17.75% |
1.8 (1.8.8.8) | 297 | 11.19% |
1.8 (1.8.8.7) | 259 | 9.76% |
1.8 (1.8.9.2) | 215 | 8.10% |
1.8 (1.8.8.9) | 118 | 4.45% |
1.8 (1.8.9.0) | 60 | 2.26% |
1.8 (1.8.8.1) | 55 | 2.07% |
1.8 (1.8.6.0) | 52 | 1.96% |
1.8 (1.8.8.2) | 51 | 1.92% |
1.8 (1.8.5.9) | 33 | 1.24% |
1.8 (1.8.8.3) | 31 | 1.17% |
1.8 (1.8.7.5) | 29 | 1.09% |
1.8 (1.8.8.4) | 28 | 1.06% |
Other | 397 | 14.96% |
SurgeSMTP (1,758 servers) |
|
|
Version |
Number of Servers |
Percent |
3.8k4-4 | 692 | 39.36% |
3.8i3-3 | 178 | 10.13% |
3.7b8-8 | 102 | 5.80% |
3.8f3-3 | 95 | 5.40% |
3.6f5-5 | 69 | 3.92% |
3.5b3-3 | 62 | 3.53% |
3.8f2-2 | 56 | 3.19% |
3.9a-1 | 42 | 2.39% |
3.0c2-2 | 42 | 2.39% |
3.8k2-2 | 41 | 2.33% |
3.8t-5 | 37 | 2.10% |
3.7b6-6 | 34 | 1.93% |
3.8i-1 | 24 | 1.37% |
3.8m-1 | 22 | 1.25% |
2.1c7-7 | 20 | 1.14% |
3.8o-1 | 20 | 1.14% |
3.8k-1 | 18 | 1.02% |
Other | 204 | 11.60% |
Qmail Toaster (1,661 servers) |
|
|
Version |
Number of Servers |
Percent |
1.3 | 1,226 | 73.81% |
1.2 | 351 | 21.13% |
1.0 | 69 | 4.15% |
Other | 15 | 0.90% |
Gordano Messaging Suite (GMS) (1,008 servers) |
|
|
Version |
Number of Servers |
Percent |
Other | 1,008 | 100.00% |
Post.Office (951 servers) |
|
|
Version |
Number of Servers |
Percent |
3.5.3 | 241 | 25.34% |
4.0.1 | 90 | 9.46% |
3.5.3J | 75 | 7.89% |
3.6.3 | 56 | 5.89% |
3.8.3 | 52 | 5.47% |
3.6.2 | 39 | 4.10% |
3.9.1 | 36 | 3.79% |
3.9.2.3 | 33 | 3.47% |
3.1.2J | 30 | 3.15% |
3.9.2 | 24 | 2.52% |
3.8.7.4 | 22 | 2.31% |
3.1.2 | 22 | 2.31% |
3.9.0 | 22 | 2.31% |
3.8.4 | 21 | 2.21% |
3.9.1.3 | 15 | 1.58% |
4.1 | 15 | 1.58% |
3.5.2 | 15 | 1.58% |
4.0.0.2 | 15 | 1.58% |
3.8.2 | 12 | 1.26% |
3.6.0 | 12 | 1.26% |
3.9.2.1 | 11 | 1.16% |
4.0.0.1 | 11 | 1.16% |
Other | 82 | 8.62% |
NetIQ MailMarshal (722 servers) |
|
|
Version |
Number of Servers |
Percent |
6.0.3.8 | 556 | 77.01% |
5.5.6.7 | 40 | 5.54% |
6.1.3.15 | 36 | 4.99% |
5.5.6.6 | 16 | 2.22% |
5.5.4.16 | 16 | 2.22% |
5.5.5.9 | 15 | 2.08% |
5.5.6.5 | 11 | 1.52% |
5.5.5.6 | 8 | 1.11% |
Other | 24 | 3.32% |
InterScan VirusWall (688 servers) |
|
|
Version |
Number of Servers |
Percent |
Other | 688 | 100.00% |
Mirapoint (579 servers) |
|
|
Version |
Number of Servers |
Percent |
3.8.4-GA | 112 | 19.34% |
3.8.3-GA | 102 | 17.62% |
3.8.5-GA | 76 | 13.13% |
3.8.6-GA | 64 | 11.05% |
3.7.5a-GA | 55 | 9.50% |
3.8.2-GA | 41 | 7.08% |
3.7.3a-GA | 27 | 4.66% |
3.7.4b-GA | 24 | 4.15% |
3.7.5-GA | 13 | 2.25% |
3.5.8-GR | 10 | 1.73% |
1.1.0 | 8 | 1.38% |
3.7.2-GA | 7 | 1.21% |
3.7.1-GA | 6 | 1.04% |
Other | 34 | 5.87% |
Interscan (547 servers) |
|
|
Version |
Number of Servers |
Percent |
3.55 (build 1016) | 89 | 16.27% |
3.8-Build_3013 | 68 | 12.43% |
3.81-Build_1022 | 61 | 11.15% |
3.55 (build 1029) | 53 | 9.69% |
3.53 (build 2017) | 50 | 9.14% |
3.53 (build 2011) | 43 | 7.86% |
3.81-Build_1084 | 39 | 7.13% |
3.53 (build 2013) | 24 | 4.39% |
3.53 (build 1493) | 20 | 3.66% |
3.52 (build 1375) | 15 | 2.74% |
3.55 (build 1020) | 14 | 2.56% |
3.8-Build_1080 | 9 | 1.65% |
3.81-Build_1055 | 7 | 1.28% |
3.55 (build 1018) | 6 | 1.10% |
Other | 49 | 8.96% |
VisNetic (544 servers) |
|
|
Version |
Number of Servers |
Percent |
9.1.4.1 | 95 | 17.46% |
9.1.4.0 | 53 | 9.74% |
8.5.0.8 | 44 | 8.09% |
7.2.4.1 | 37 | 6.80% |
5.8.6.6 | 34 | 6.25% |
8.3.5.0 | 28 | 5.15% |
8.0.3.0 | 28 | 5.15% |
5.0.2.3 | 25 | 4.60% |
5.5.8.3 | 23 | 4.23% |
8.0.3.1 | 19 | 3.49% |
6.2.2.0 | 19 | 3.49% |
7.6.1.0 | 16 | 2.94% |
8.0.3 | 15 | 2.76% |
5.3.5.0 | 13 | 2.39% |
5.4.5.4 | 11 | 2.02% |
7.5.3.0 | 10 | 1.84% |
8.3.6 | 9 | 1.65% |
8.5.0.5 | 9 | 1.65% |
7.2.4.0 | 7 | 1.29% |
5.8.6.4 | 6 | 1.10% |
8.3.0.1 | 6 | 1.10% |
6.0.9.0 | 6 | 1.10% |
Other | 31 | 5.70% |
MagicMail (373 servers) |
|
|
Version |
Number of Servers |
Percent |
Other | 373 | 100.00% |
ModusMail (227 servers) |
|
|
Version |
Number of Servers |
Percent |
4.35.480.0 | 83 | 36.56% |
3.2.315.0 | 29 | 12.78% |
4.2.425.22 | 26 | 11.45% |
4.1.361.21 | 23 | 10.13% |
4.35.477.0 | 14 | 6.17% |
3.1.302.0 | 10 | 4.41% |
4.3.459.0 | 9 | 3.96% |
4.35.480.11 | 8 | 3.52% |
4.2.420.0 | 4 | 1.76% |
4.1.361.0 | 4 | 1.76% |
4.0.340.0 | 3 | 1.32% |
Other | 14 | 6.17% |
WebSTAR V (216 servers) |
|
|
Version |
Number of Servers |
Percent |
5.4.0 | 65 | 30.09% |
5.4.1 | 60 | 27.78% |
5.3.4 | 47 | 21.76% |
5.3.3 | 19 | 8.80% |
5.3.2 | 17 | 7.87% |
5.3.0 | 6 | 2.78% |
Other | 2 | 0.93% |
Mercury (202 servers) |
|
|
Version |
Number of Servers |
Percent |
1.48 | 94 | 46.53% |
3.32 | 63 | 31.19% |
3.21c | 18 | 8.91% |
1.44 | 7 | 3.47% |
3.31 | 7 | 3.47% |
1.47 | 6 | 2.97% |
Other | 7 | 3.47% |
Neon Mail Server (183 servers) |
|
|
Version |
Number of Servers |
Percent |
3.0.7 | 46 | 25.14% |
3.0.9 | 40 | 21.86% |
3.1.2 | 32 | 17.49% |
3.1.0 | 24 | 13.11% |
3.1.3 | 24 | 13.11% |
3.0.8 | 6 | 3.28% |
3.0.6 | 5 | 2.73% |
3.1.1 | 3 | 1.64% |
3.0.5 | 2 | 1.09% |
Other | 1 | 0.55% |
MAILsweeper (98 servers) |
|
|
Version |
Number of Servers |
Percent |
4.3.20.0 | 20 | 20.41% |
4.3.14.0 | 17 | 17.35% |
4.3.17.0 | 16 | 16.33% |
4.3.19.0 | 12 | 12.24% |
4.3.12.0 | 7 | 7.14% |
4.2.10.0 | 7 | 7.14% |
4.3.1.0 | 7 | 7.14% |
4.3.6.0 | 3 | 3.06% |
4.2.5.0 | 3 | 3.06% |
4.3.10.0 | 3 | 3.06% |
4.2.1.0 | 2 | 2.04% |
4.1.5.0 | 1 | 1.02% |
Other | 0 | 0.00% |
MessageWall (89 servers) |
|
|
Version |
Number of Servers |
Percent |
1.0.8 | 68 | 76.40% |
1.0.11 | 18 | 20.22% |
1.1.0 | 2 | 2.25% |
1.0.6 | 1 | 1.12% |
Other | 0 | 0.00% |
WebSTAR (87 servers) |
|
|
Version |
Number of Servers |
Percent |
Other | 87 | 100.00% |
OpenVMS (33 servers) |
|
|
Version |
Number of Servers |
Percent |
8.3 | 10 | 30.30% |
8.2 | 9 | 27.27% |
7.3 | 8 | 24.24% |
7.2 | 5 | 15.15% |
6.1 | 1 | 3.03% |
Other | 0 | 0.00% |