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Mail (MX) Server Survey
May 1st, 2006
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 | 1,578,887 | 100.0% |
Number of Servers that didn't respond | 217,310 | 13.76% |
Server didn't open socket | 210,573 | 13.34% |
Server didn't provide banner | 6,737 | 0.43% |
Server provided banner | 1,361,577 | 86.24% |
Server banner identifies software in use | 874,005 | 55.36% |
As indicated by the above table, of the 1,578,887 servers
queried, only 874,005 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 |
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Server Type |
Number of Servers |
Percent |
Sendmail | 311,623 | 35.65% |
Microsoft | 173,909 | 19.90% |
Exim | 138,099 | 15.80% |
Postfix | 102,124 | 11.68% |
IMail | 51,077 | 5.84% |
MDaemon | 20,152 | 2.31% |
MailEnable | 15,264 | 1.75% |
Lotus Domino | 9,396 | 1.08% |
Merak | 8,280 | 0.95% |
CommuniGate Pro | 5,697 | 0.65% |
GroupWise | 5,317 | 0.61% |
Trend Micro | 4,653 | 0.53% |
Kerio | 3,321 | 0.38% |
ArGoSoft | 3,215 | 0.37% |
WinWebMail | 3,197 | 0.37% |
NetIQ MailMarshal | 2,511 | 0.29% |
XMail | 2,183 | 0.25% |
Gordano Messaging Suite (GMS) | 2,015 | 0.23% |
Interscan | 1,958 | 0.22% |
Post.Office | 1,579 | 0.18% |
SurgeSMTP | 1,479 | 0.17% |
ModusMail | 1,367 | 0.16% |
InterScan VirusWall | 1,362 | 0.16% |
Qmail Toaster | 776 | 0.09% |
VisNetic | 765 | 0.09% |
MAILsweeper | 667 | 0.08% |
Mercury | 491 | 0.06% |
WebSTAR V | 435 | 0.05% |
Mirapoint | 417 | 0.05% |
WebSTAR | 226 | 0.03% |
MessageWall | 219 | 0.03% |
Neon Mail Server | 131 | 0.01% |
MagicMail | 66 | 0.01% |
OpenVMS | 34 | 0.00% |
Detailed Breakdown of Revisions on a Per-Server Basis |
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Sendmail (311,623 servers) |
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|
Version |
Number of Servers |
Percent |
8.13.6 | 90,861 | 29.16% |
8.11.6 | 55,468 | 17.80% |
8.12.10 | 31,896 | 10.24% |
8.12.11.20060308 | 21,571 | 6.92% |
8.12.11 | 18,113 | 5.81% |
8.13.1 | 16,331 | 5.24% |
8.12.8 | 14,886 | 4.78% |
8.13.4 | 11,996 | 3.85% |
8.10.2 | 10,907 | 3.50% |
8.9.3 | 10,577 | 3.39% |
8.11.7 | 4,601 | 1.48% |
8.13.3 | 4,154 | 1.33% |
8.12.9 | 3,983 | 1.28% |
Other | 16,279 | 5.22% |
Microsoft (173,909 servers) |
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|
Version |
Number of Servers |
Percent |
6.0.3790.1830 | 83,609 | 48.08% |
5.0.2195.6713 | 48,013 | 27.61% |
6.0.3790.211 | 25,772 | 14.82% |
5.5.2653.13 | 4,906 | 2.82% |
6.0.3790.0 | 4,455 | 2.56% |
5.0.2195.5329 | 1,856 | 1.07% |
Other | 5,298 | 3.05% |
Exim (138,099 servers) |
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|
Version |
Number of Servers |
Percent |
4.52 | 99,244 | 71.86% |
4.50 | 10,268 | 7.44% |
4.60 | 6,132 | 4.44% |
4.44 | 3,906 | 2.83% |
4.43 | 2,735 | 1.98% |
3.36 | 2,202 | 1.59% |
3.35 | 1,935 | 1.40% |
4.42 | 1,713 | 1.24% |
4.54 | 1,591 | 1.15% |
4.34 | 1,417 | 1.03% |
Other | 6,956 | 5.04% |
Postfix (102,124 servers) |
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|
Version |
Number of Servers |
Percent |
Other | 102,124 | 100.00% |
IMail (51,077 servers) |
|
|
Version |
Number of Servers |
Percent |
8.15 | 14,271 | 27.94% |
8.05 | 6,560 | 12.84% |
6.06 | 6,465 | 12.66% |
8.22 | 4,194 | 8.21% |
8.21 | 3,880 | 7.60% |
7.07 | 2,336 | 4.57% |
7.15 | 2,111 | 4.13% |
8.20 | 1,357 | 2.66% |
8.10 | 874 | 1.71% |
9.03 | 820 | 1.61% |
8.14 | 764 | 1.50% |
8.00 | 752 | 1.47% |
8.13 | 616 | 1.21% |
8.12 | 598 | 1.17% |
8.02 | 568 | 1.11% |
Other | 4,911 | 9.61% |
MDaemon (20,152 servers) |
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|
Version |
Number of Servers |
Percent |
8.1.3 | 3,491 | 17.32% |
8.1.4 | 2,334 | 11.58% |
8.1.5 | 1,566 | 7.77% |
6.8.5 | 1,440 | 7.15% |
7.2.3 | 1,243 | 6.17% |
7.2.0 | 1,083 | 5.37% |
9.0.0 | 996 | 4.94% |
8.0.2 | 815 | 4.04% |
8.1.1 | 725 | 3.60% |
8.0.3 | 647 | 3.21% |
7.1.0 | 545 | 2.70% |
7.1.2 | 527 | 2.62% |
8.0.1 | 519 | 2.58% |
7.2.2 | 504 | 2.50% |
6.8.4 | 468 | 2.32% |
7.2.1 | 432 | 2.14% |
7.0.1 | 430 | 2.13% |
8.1.2 | 261 | 1.30% |
Other | 2,126 | 10.55% |
MailEnable (15,264 servers) |
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|
Version |
Number of Servers |
Percent |
1.8-- | 3,508 | 22.98% |
1.9-- | 1,689 | 11.07% |
0-1.75- | 1,175 | 7.70% |
0-1.54- | 1,076 | 7.05% |
0-1.6- | 874 | 5.73% |
0-1.72- | 597 | 3.91% |
1.73-- | 537 | 3.52% |
0-1.71- | 524 | 3.43% |
1.91-- | 519 | 3.40% |
1.92-- | 477 | 3.12% |
1.95-- | 397 | 2.60% |
1.71-- | 386 | 2.53% |
0--1.1 | 346 | 2.27% |
0--1.23 | 312 | 2.04% |
0-1.7- | 237 | 1.55% |
0--1.2 | 218 | 1.43% |
1.72-- | 186 | 1.22% |
Other | 2,206 | 14.45% |
Lotus Domino (9,396 servers) |
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|
Version |
Number of Servers |
Percent |
6.5.4 | 1,100 | 11.71% |
6.5.1 | 1,054 | 11.22% |
6.5.3 | 791 | 8.42% |
6.5 | 559 | 5.95% |
7.0 | 533 | 5.67% |
5.0.11 | 517 | 5.50% |
6.5.2 | 483 | 5.14% |
6.5.5 | 381 | 4.05% |
5.0.12 | 360 | 3.83% |
7.0.1 | 347 | 3.69% |
6.5.4FP2 | 298 | 3.17% |
5.0.8 | 294 | 3.13% |
5.0.10 | 263 | 2.80% |
6.5.4FP1 | 228 | 2.43% |
5.0.13a | 224 | 2.38% |
6.0.3 | 214 | 2.28% |
6.0.2CF1 | 211 | 2.25% |
6.0 | 161 | 1.71% |
5.0.9 | 154 | 1.64% |
6.5.3FP1 | 124 | 1.32% |
5.0.5 | 123 | 1.31% |
5.0.6a | 103 | 1.10% |
6.0.1 | 102 | 1.09% |
5.0.9a | 95 | 1.01% |
Other | 677 | 7.21% |
Merak (8,280 servers) |
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Version |
Number of Servers |
Percent |
8.3.8 | 1,923 | 23.22% |
8.0.3 | 1,729 | 20.88% |
7.4.5 | 544 | 6.57% |
8.2.4 | 403 | 4.87% |
7.6.4 | 400 | 4.83% |
7.5.2 | 383 | 4.63% |
7.4.2 | 281 | 3.39% |
8.3.0 | 231 | 2.79% |
7.2.0 | 225 | 2.72% |
7.4.0 | 178 | 2.15% |
6.2.1 | 168 | 2.03% |
8.3.6 | 142 | 1.71% |
4.4.2 | 133 | 1.61% |
7.6.1 | 107 | 1.29% |
5.5.7 | 105 | 1.27% |
5.9.4 | 102 | 1.23% |
5.8.6 | 88 | 1.06% |
7.0.1 | 87 | 1.05% |
Other | 1,051 | 12.69% |
CommuniGate Pro (5,697 servers) |
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|
Version |
Number of Servers |
Percent |
4.1.8 | 987 | 17.32% |
4.2.10 | 582 | 10.22% |
5.0.8 | 319 | 5.60% |
4.2.4 | 260 | 4.56% |
4.2.8 | 230 | 4.04% |
4.2 | 223 | 3.91% |
4.3.8 | 213 | 3.74% |
4.2.9 | 192 | 3.37% |
4.2.7 | 178 | 3.12% |
5.0.9 | 171 | 3.00% |
5.0.6 | 162 | 2.84% |
4.3.6 | 161 | 2.83% |
4.0.6 | 151 | 2.65% |
3.5.9 | 122 | 2.14% |
4.0.1 | 99 | 1.74% |
4.3.7 | 99 | 1.74% |
4.3.4 | 90 | 1.58% |
4.3.9 | 90 | 1.58% |
5.0.1 | 87 | 1.53% |
4.2.6 | 84 | 1.47% |
5.0.7 | 83 | 1.46% |
4.2.5 | 82 | 1.44% |
4.2.3 | 75 | 1.32% |
5.0.2 | 74 | 1.30% |
4.1.6 | 66 | 1.16% |
4.1.3 | 65 | 1.14% |
4.0.5 | 64 | 1.12% |
5.0 | 61 | 1.07% |
5.0.4 | 58 | 1.02% |
Other | 569 | 9.99% |
GroupWise (5,317 servers) |
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|
Version |
Number of Servers |
Percent |
6.5.4 | 1,226 | 23.06% |
7.0 | 741 | 13.94% |
6.5.5 | 582 | 10.95% |
6.0.4 | 523 | 9.84% |
6.5.1 | 434 | 8.16% |
6.5.2 | 289 | 5.44% |
6.5.3 | 268 | 5.04% |
6.0.2 | 193 | 3.63% |
6.0.3 | 169 | 3.18% |
6.5.0 | 167 | 3.14% |
6.5.6 | 162 | 3.05% |
5.5.5 | 160 | 3.01% |
6.0.1 | 110 | 2.07% |
7.0.1 | 62 | 1.17% |
5.5.4 | 60 | 1.13% |
Other | 171 | 3.22% |
Trend Micro (4,653 servers) |
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|
Version |
Number of Servers |
Percent |
5.5 | 3,601 | 77.39% |
5.7 | 521 | 11.20% |
5.18 | 432 | 9.28% |
5.15 | 69 | 1.48% |
Other | 30 | 0.64% |
Kerio (3,321 servers) |
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|
Version |
Number of Servers |
Percent |
6.1.3 | 828 | 24.93% |
6.1.2 | 565 | 17.01% |
6.1.0 | 345 | 10.39% |
6.1.1 | 258 | 7.77% |
6.0.10 | 220 | 6.62% |
6.0.3 | 133 | 4.00% |
6.0.8 | 109 | 3.28% |
5.7.10 | 98 | 2.95% |
6.0.9 | 84 | 2.53% |
6.0.6 | 84 | 2.53% |
6.0.7 | 69 | 2.08% |
5.7.9 | 48 | 1.45% |
5.7.4 | 47 | 1.42% |
6.0.1 | 45 | 1.36% |
6.0.4 | 40 | 1.20% |
6.0.5 | 39 | 1.17% |
5.7.6 | 35 | 1.05% |
Other | 274 | 8.25% |
ArGoSoft (3,215 servers) |
|
|
Version |
Number of Servers |
Percent |
1.8 (1.8.8.7) | 627 | 19.50% |
1.8 (1.8.8.1) | 270 | 8.40% |
1.8 (1.8.8.5) | 224 | 6.97% |
1.8 (1.8.8.3) | 204 | 6.35% |
1.8 (1.8.6.0) | 172 | 5.35% |
1.8 (1.8.8.4) | 167 | 5.19% |
1.8 (1.8.8.6) | 157 | 4.88% |
1.8 (1.8.8.2) | 151 | 4.70% |
1.8 (1.8.7.5) | 107 | 3.33% |
1.8 (1.8.5.9) | 82 | 2.55% |
1.8 (1.8.7.6) | 68 | 2.12% |
1.8 (1.8.7.3) | 65 | 2.02% |
1.8 (1.8.6.6) | 59 | 1.84% |
1.8 (1.8.7.7) | 51 | 1.59% |
1.8 (1.8.8.0) | 44 | 1.37% |
1.8 (1.8.4.7) | 37 | 1.15% |
1.8 (1.8.3.6) | 36 | 1.12% |
1.8 (1.8.7.1) | 34 | 1.06% |
Other | 660 | 20.53% |
WinWebMail (3,197 servers) |
|
|
Version |
Number of Servers |
Percent |
3.6.3.1 | 1,359 | 42.51% |
3.7.0.5 | 733 | 22.93% |
3.7.0.7 | 579 | 18.11% |
3.7.0.3 | 462 | 14.45% |
3.7.0.1 | 49 | 1.53% |
Other | 15 | 0.47% |
NetIQ MailMarshal (2,511 servers) |
|
|
Version |
Number of Servers |
Percent |
6.0.3.8 | 1,735 | 69.10% |
5.5.6.7 | 232 | 9.24% |
6.1.3.15 | 134 | 5.34% |
5.5.5.9 | 75 | 2.99% |
5.5.4.16 | 68 | 2.71% |
5.5.6.6 | 60 | 2.39% |
5.5.6.5 | 50 | 1.99% |
5.5.5.6 | 43 | 1.71% |
5.5.4.17 | 34 | 1.35% |
Other | 80 | 3.19% |
XMail (2,183 servers) |
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|
Version |
Number of Servers |
Percent |
1.21 | 634 | 29.04% |
1.22 | 568 | 26.02% |
1.20 | 333 | 15.25% |
1.17 | 243 | 11.13% |
1.18 | 94 | 4.31% |
1.12 | 69 | 3.16% |
1.16 | 52 | 2.38% |
1.10 | 47 | 2.15% |
1.15 | 37 | 1.69% |
1.11 | 35 | 1.60% |
Other | 71 | 3.25% |
Gordano Messaging Suite (GMS) (2,015 servers) |
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|
Version |
Number of Servers |
Percent |
Other | 2,015 | 100.00% |
Interscan (1,958 servers) |
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|
Version |
Number of Servers |
Percent |
3.55 (build 1016) | 491 | 25.08% |
3.81-Build_1022 | 218 | 11.13% |
3.53 (build 2011) | 202 | 10.32% |
3.55 (build 1029) | 159 | 8.12% |
3.8-Build_3013 | 150 | 7.66% |
3.53 (build 2017) | 143 | 7.30% |
3.53 (build 2013) | 105 | 5.36% |
3.52 (build 1375) | 79 | 4.03% |
3.55 (build 1020) | 57 | 2.91% |
3.53 (build 1493) | 53 | 2.71% |
3.8-Build_1080 | 42 | 2.15% |
3.81-Build_1032 | 25 | 1.28% |
3.8-Build_3065 | 22 | 1.12% |
3.81-Build_1055 | 21 | 1.07% |
3.55 (build 1018) | 21 | 1.07% |
Other | 170 | 8.68% |
Post.Office (1,579 servers) |
|
|
Version |
Number of Servers |
Percent |
3.5.3 | 655 | 41.48% |
3.5.3J | 167 | 10.58% |
3.8.3 | 73 | 4.62% |
3.6.3 | 70 | 4.43% |
3.6.2 | 67 | 4.24% |
3.1.2 | 56 | 3.55% |
3.1.2J | 56 | 3.55% |
3.5.2 | 46 | 2.91% |
3.9.1 | 44 | 2.79% |
3.8.4 | 41 | 2.60% |
3.6.0 | 31 | 1.96% |
3.9.0 | 29 | 1.84% |
3.6 | 28 | 1.77% |
3.9.2 | 25 | 1.58% |
3.9.1.3 | 17 | 1.08% |
4.0.0.2 | 17 | 1.08% |
4.0.0.1 | 16 | 1.01% |
Other | 141 | 8.93% |
SurgeSMTP (1,479 servers) |
|
|
Version |
Number of Servers |
Percent |
3.6f5-5 | 651 | 44.02% |
3.0c2-2 | 145 | 9.80% |
3.5b3-3 | 137 | 9.26% |
2.1c7-7 | 48 | 3.25% |
3.7c-3 | 36 | 2.43% |
3.7b-2 | 33 | 2.23% |
2.2c10-10 | 29 | 1.96% |
3.7a-15 | 28 | 1.89% |
2.0g2-1 | 27 | 1.83% |
1.6e2 | 27 | 1.83% |
3.6f3-3 | 24 | 1.62% |
1.8g3 | 22 | 1.49% |
3.7b3-3 | 19 | 1.28% |
3.7b-1 | 18 | 1.22% |
3.6f4-4 | 17 | 1.15% |
1.9b-1 | 16 | 1.08% |
1.5d2 | 15 | 1.01% |
2.2g3-1 | 15 | 1.01% |
Other | 172 | 11.63% |
ModusMail (1,367 servers) |
|
|
Version |
Number of Servers |
Percent |
4.3.459.0 | 572 | 41.84% |
4.2.425.22 | 172 | 12.58% |
4.1.361.21 | 161 | 11.78% |
4.2.425.4 | 94 | 6.88% |
4.2.425.16 | 80 | 5.85% |
3.2.315.0 | 56 | 4.10% |
4.2.407.0 | 33 | 2.41% |
4.1.361.0 | 31 | 2.27% |
3.1.302.0 | 27 | 1.98% |
4.0.340.0 | 24 | 1.76% |
3.1.297.0 | 16 | 1.17% |
4.2.420.0 | 14 | 1.02% |
4.3.465.0 | 14 | 1.02% |
Other | 73 | 5.34% |
InterScan VirusWall (1,362 servers) |
|
|
Version |
Number of Servers |
Percent |
Other | 1,362 | 100.00% |
Qmail Toaster (776 servers) |
|
|
Version |
Number of Servers |
Percent |
1.2 | 596 | 76.80% |
1.0 | 178 | 22.94% |
Other | 2 | 0.26% |
VisNetic (765 servers) |
|
|
Version |
Number of Servers |
Percent |
8.3.5.0 | 93 | 12.16% |
7.2.4.1 | 72 | 9.41% |
8.0.3.0 | 63 | 8.24% |
5.8.6.6 | 61 | 7.97% |
7.6.1.0 | 59 | 7.71% |
8.0.3.1 | 51 | 6.67% |
5.0.2.3 | 50 | 6.54% |
6.2.2.0 | 49 | 6.41% |
8.3.6 | 30 | 3.92% |
5.5.8.3 | 30 | 3.92% |
8.0.3 | 24 | 3.14% |
5.4.5.4 | 23 | 3.01% |
7.5.3.0 | 23 | 3.01% |
8.3.0.1 | 19 | 2.48% |
5.8.6.4 | 17 | 2.22% |
5.3.5.0 | 16 | 2.09% |
5.0.1 | 13 | 1.70% |
6.0.9.0 | 13 | 1.70% |
7.2.4.0 | 9 | 1.18% |
5.0.2.1 | 8 | 1.05% |
Other | 42 | 5.49% |
MAILsweeper (667 servers) |
|
|
Version |
Number of Servers |
Percent |
4.3.12.0 | 131 | 19.64% |
4.3.19.0 | 125 | 18.74% |
4.3.14.0 | 119 | 17.84% |
4.3.17.0 | 108 | 16.19% |
4.2.10.0 | 43 | 6.45% |
4.3.1.0 | 38 | 5.70% |
4.2.5.0 | 26 | 3.90% |
4.3.10.0 | 26 | 3.90% |
4.3.6.0 | 22 | 3.30% |
4.2.1.0 | 19 | 2.85% |
Other | 10 | 1.50% |
Mercury (491 servers) |
|
|
Version |
Number of Servers |
Percent |
1.48 | 220 | 44.81% |
3.32 | 168 | 34.22% |
3.21c | 38 | 7.74% |
3.31 | 22 | 4.48% |
1.44 | 15 | 3.05% |
1.47 | 12 | 2.44% |
3.01a | 7 | 1.43% |
Other | 9 | 1.83% |
WebSTAR V (435 servers) |
|
|
Version |
Number of Servers |
Percent |
5.4.0 | 138 | 31.72% |
5.4.1 | 109 | 25.06% |
5.3.4 | 99 | 22.76% |
5.3.3 | 39 | 8.97% |
5.3.2 | 29 | 6.67% |
5.3.0 | 10 | 2.30% |
5.2.4 | 6 | 1.38% |
5.3.1 | 5 | 1.15% |
Other | 0 | 0.00% |
Mirapoint (417 servers) |
|
|
Version |
Number of Servers |
Percent |
3.7.3a-GA | 56 | 13.43% |
3.7.4b-GA | 46 | 11.03% |
3.7.2-GA | 44 | 10.55% |
3.5.8-GR | 42 | 10.07% |
3.7.1-GA | 40 | 9.59% |
3.5.9-GR | 23 | 5.52% |
3.7.3-GA | 19 | 4.56% |
3.7.0-GA | 18 | 4.32% |
3.6.5-GR | 17 | 4.08% |
3.6.4-CR | 13 | 3.12% |
3.6.6-GR | 12 | 2.88% |
1.1.0 | 11 | 2.64% |
3.7.5-GA | 9 | 2.16% |
3.5.7-GR | 7 | 1.68% |
3.5.3-GR | 6 | 1.44% |
3.5.6-GR | 6 | 1.44% |
3.2.2-GA | 5 | 1.20% |
3.7.4a-GA | 5 | 1.20% |
Other | 38 | 9.11% |
WebSTAR (226 servers) |
|
|
Version |
Number of Servers |
Percent |
Other | 226 | 100.00% |
MessageWall (219 servers) |
|
|
Version |
Number of Servers |
Percent |
1.0.8 | 183 | 83.56% |
1.0.9 | 15 | 6.85% |
1.1.23 | 7 | 3.20% |
1.1.0 | 6 | 2.74% |
1.0.6 | 5 | 2.28% |
Other | 3 | 1.37% |
Neon Mail Server (131 servers) |
|
|
Version |
Number of Servers |
Percent |
3.0.7 | 96 | 73.28% |
3.0.8 | 20 | 15.27% |
3.0.6 | 10 | 7.63% |
3.0.5 | 3 | 2.29% |
3.0.4 | 2 | 1.53% |
Other | 0 | 0.00% |
MagicMail (66 servers) |
|
|
Version |
Number of Servers |
Percent |
Other | 66 | 100.00% |
OpenVMS (34 servers) |
|
|
Version |
Number of Servers |
Percent |
7.3 | 16 | 47.06% |
8.2 | 8 | 23.53% |
7.2 | 6 | 17.65% |
6.1 | 2 | 5.88% |
7.1 | 2 | 5.88% |
Other | 0 | 0.00% |