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You are viewing an outdated report published on June 1st, 2006. The latest version of this report was published on March 1st, 2010
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Mail (MX) Server Survey
June 1st, 2006
| 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 Queried | 1,594,604 | 100.0% |
| Number of Servers that didn't respond | 208,071 | 13.05% |
| Server didn't open socket | 201,457 | 12.63% |
| Server didn't provide banner | 6,614 | 0.41% |
| Server provided banner | 1,386,533 | 86.95% |
| Server banner identifies software in use | 887,090 | 55.63% |
As indicated by the above table, of the 1,594,604 servers
queried, only 887,090 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 | 312,271 | 35.20% |
| Microsoft | 178,657 | 20.14% |
| Exim | 142,879 | 16.11% |
| Postfix | 105,051 | 11.84% |
| IMail | 51,201 | 5.77% |
| MDaemon | 20,585 | 2.32% |
| MailEnable | 15,965 | 1.80% |
| Lotus Domino | 9,444 | 1.06% |
| Merak | 8,482 | 0.96% |
| CommuniGate Pro | 5,771 | 0.65% |
| GroupWise | 5,288 | 0.60% |
| Trend Micro | 4,717 | 0.53% |
| Kerio | 3,444 | 0.39% |
| WinWebMail | 3,444 | 0.39% |
| ArGoSoft | 3,288 | 0.37% |
| NetIQ MailMarshal | 2,487 | 0.28% |
| XMail | 2,228 | 0.25% |
| Interscan | 1,902 | 0.21% |
| Post.Office | 1,566 | 0.18% |
| SurgeSMTP | 1,541 | 0.17% |
| InterScan VirusWall | 1,362 | 0.15% |
| ModusMail | 1,361 | 0.15% |
| Qmail Toaster | 818 | 0.09% |
| VisNetic | 775 | 0.09% |
| MAILsweeper | 627 | 0.07% |
| Mercury | 474 | 0.05% |
| WebSTAR V | 427 | 0.05% |
| Mirapoint | 420 | 0.05% |
| MessageWall | 215 | 0.02% |
| WebSTAR | 214 | 0.02% |
| Neon Mail Server | 148 | 0.02% |
| OpenVMS | 38 | 0.00% |
| Detailed Breakdown of Revisions on a Per-Server Basis |
 |
| | Version |
Number of Servers |
Percent |
| 8.13.6 | 94,072 | 30.13% |
| 8.11.6 | 54,491 | 17.45% |
| 8.12.10 | 33,582 | 10.75% |
| 8.12.11.20060308 | 23,553 | 7.54% |
| 8.12.11 | 17,996 | 5.76% |
| 8.13.1 | 17,489 | 5.60% |
| 8.12.8 | 14,485 | 4.64% |
| 8.13.4 | 12,111 | 3.88% |
| 8.10.2 | 10,316 | 3.30% |
| 8.9.3 | 9,278 | 2.97% |
| 8.13.3 | 3,950 | 1.26% |
| 8.12.9 | 3,833 | 1.23% |
| Other | 17,115 | 5.48% |
| Microsoft (178,657 servers) |
 | |
| Version |
Number of Servers |
Percent |
| 6.0.3790.1830 | 89,621 | 50.16% |
| 5.0.2195.6713 | 47,535 | 26.61% |
| 6.0.3790.211 | 25,374 | 14.20% |
| 5.5.2653.13 | 4,790 | 2.68% |
| 6.0.3790.0 | 4,335 | 2.43% |
| 5.0.2195.5329 | 1,798 | 1.01% |
| Other | 5,204 | 2.91% |
| Exim (142,879 servers) |
 |
|
| Version |
Number of Servers |
Percent |
| 4.52 | 103,176 | 72.21% |
| 4.50 | 10,473 | 7.33% |
| 4.60 | 5,838 | 4.09% |
| 4.44 | 3,737 | 2.62% |
| 4.61 | 2,837 | 1.99% |
| 4.43 | 2,567 | 1.80% |
| 3.36 | 2,196 | 1.54% |
| 3.35 | 1,871 | 1.31% |
| 4.42 | 1,676 | 1.17% |
| 4.54 | 1,530 | 1.07% |
| Other | 6,978 | 4.88% |
| Postfix (105,051 servers) |
 |
|
| Version |
Number of Servers |
Percent |
| Other | 105,051 | 100.00% |
| IMail (51,201 servers) |
 |
|
| Version |
Number of Servers |
Percent |
| 8.15 | 14,912 | 29.12% |
| 8.05 | 6,338 | 12.38% |
| 6.06 | 6,275 | 12.26% |
| 8.22 | 4,333 | 8.46% |
| 8.21 | 3,846 | 7.51% |
| 7.15 | 2,149 | 4.20% |
| 7.07 | 2,094 | 4.09% |
| 8.20 | 1,266 | 2.47% |
| 9.03 | 1,138 | 2.22% |
| 8.10 | 871 | 1.70% |
| 8.14 | 751 | 1.47% |
| 8.00 | 745 | 1.46% |
| 8.13 | 595 | 1.16% |
| 8.12 | 579 | 1.13% |
| 8.02 | 560 | 1.09% |
| Other | 4,749 | 9.28% |
| MDaemon (20,585 servers) |
 |
|
| Version |
Number of Servers |
Percent |
| 8.1.3 | 3,073 | 14.93% |
| 9.0.0 | 2,344 | 11.39% |
| 8.1.4 | 1,876 | 9.11% |
| 6.8.5 | 1,425 | 6.92% |
| 7.2.3 | 1,210 | 5.88% |
| 7.2.0 | 1,099 | 5.34% |
| 8.1.5 | 943 | 4.58% |
| 9.0.1 | 938 | 4.56% |
| 8.0.2 | 789 | 3.83% |
| 8.1.1 | 686 | 3.33% |
| 8.0.3 | 626 | 3.04% |
| 7.1.0 | 517 | 2.51% |
| 7.1.2 | 513 | 2.49% |
| 7.2.2 | 503 | 2.44% |
| 6.8.4 | 464 | 2.25% |
| 7.2.1 | 429 | 2.08% |
| 7.0.1 | 420 | 2.04% |
| 8.0.1 | 407 | 1.98% |
| 8.1.2 | 237 | 1.15% |
| Other | 2,086 | 10.13% |
| MailEnable (15,965 servers) |
 |
|
| Version |
Number of Servers |
Percent |
| 1.8-- | 3,446 | 21.58% |
| 1.9-- | 1,924 | 12.05% |
| 0-1.75- | 1,426 | 8.93% |
| 0-1.54- | 1,016 | 6.36% |
| 1.95-- | 894 | 5.60% |
| 0-1.6- | 812 | 5.09% |
| 0-1.72- | 570 | 3.57% |
| 1.73-- | 512 | 3.21% |
| 0-1.71- | 476 | 2.98% |
| 1.91-- | 470 | 2.94% |
| 1.92-- | 448 | 2.81% |
| 1.71-- | 371 | 2.32% |
| 0--1.23 | 356 | 2.23% |
| 0--1.1 | 287 | 1.80% |
| 0-1.7- | 189 | 1.18% |
| 0--1.2 | 187 | 1.17% |
| 1.72-- | 186 | 1.17% |
| Other | 2,395 | 15.00% |
| Lotus Domino (9,444 servers) |
 |
|
| Version |
Number of Servers |
Percent |
| 6.5.4 | 1,094 | 11.58% |
| 6.5.1 | 1,034 | 10.95% |
| 6.5.3 | 776 | 8.22% |
| 6.5 | 563 | 5.96% |
| 7.0 | 539 | 5.71% |
| 5.0.11 | 505 | 5.35% |
| 6.5.2 | 474 | 5.02% |
| 7.0.1 | 472 | 5.00% |
| 6.5.5 | 441 | 4.67% |
| 5.0.12 | 346 | 3.66% |
| 6.5.4FP2 | 298 | 3.16% |
| 5.0.8 | 286 | 3.03% |
| 5.0.10 | 253 | 2.68% |
| 6.5.4FP1 | 227 | 2.40% |
| 5.0.13a | 220 | 2.33% |
| 6.0.3 | 211 | 2.23% |
| 6.0.2CF1 | 200 | 2.12% |
| 6.0 | 152 | 1.61% |
| 5.0.9 | 140 | 1.48% |
| 6.5.3FP1 | 116 | 1.23% |
| 5.0.5 | 113 | 1.20% |
| 6.0.1 | 108 | 1.14% |
| 5.0.6a | 103 | 1.09% |
| Other | 773 | 8.19% |
| Merak (8,482 servers) |
 |
|
| Version |
Number of Servers |
Percent |
| 8.3.8 | 2,095 | 24.70% |
| 8.0.3 | 1,821 | 21.47% |
| 7.4.5 | 551 | 6.50% |
| 7.6.4 | 403 | 4.75% |
| 8.2.4 | 395 | 4.66% |
| 7.5.2 | 387 | 4.56% |
| 7.4.2 | 272 | 3.21% |
| 8.3.0 | 236 | 2.78% |
| 7.2.0 | 225 | 2.65% |
| 6.2.1 | 170 | 2.00% |
| 4.4.2 | 137 | 1.62% |
| 7.4.0 | 137 | 1.62% |
| 8.3.6 | 127 | 1.50% |
| 7.6.1 | 108 | 1.27% |
| 5.9.4 | 100 | 1.18% |
| 5.5.7 | 98 | 1.16% |
| 5.8.6 | 90 | 1.06% |
| 7.0.1 | 86 | 1.01% |
| Other | 1,044 | 12.31% |
| CommuniGate Pro (5,771 servers) |
 |
|
| Version |
Number of Servers |
Percent |
| 4.1.8 | 985 | 17.07% |
| 4.2.10 | 578 | 10.02% |
| 5.0.9 | 334 | 5.79% |
| 5.0.8 | 325 | 5.63% |
| 4.2.4 | 261 | 4.52% |
| 4.2.8 | 227 | 3.93% |
| 4.2 | 212 | 3.67% |
| 4.3.8 | 209 | 3.62% |
| 4.2.9 | 187 | 3.24% |
| 4.2.7 | 174 | 3.02% |
| 4.3.6 | 154 | 2.67% |
| 5.0.6 | 152 | 2.63% |
| 4.0.6 | 151 | 2.62% |
| 3.5.9 | 121 | 2.10% |
| 4.0.1 | 97 | 1.68% |
| 4.3.7 | 94 | 1.63% |
| 4.3.9 | 90 | 1.56% |
| 5.0.1 | 84 | 1.46% |
| 5.0.7 | 83 | 1.44% |
| 4.3.4 | 83 | 1.44% |
| 4.2.6 | 82 | 1.42% |
| 4.2.5 | 76 | 1.32% |
| 4.2.3 | 74 | 1.28% |
| 5.0.2 | 69 | 1.20% |
| 4.1.3 | 66 | 1.14% |
| 4.1.6 | 63 | 1.09% |
| 4.0.5 | 61 | 1.06% |
| Other | 679 | 11.77% |
| GroupWise (5,288 servers) |
 |
|
| Version |
Number of Servers |
Percent |
| 6.5.4 | 1,192 | 22.54% |
| 7.0 | 759 | 14.35% |
| 6.5.5 | 566 | 10.70% |
| 6.0.4 | 505 | 9.55% |
| 6.5.1 | 415 | 7.85% |
| 6.5.2 | 268 | 5.07% |
| 6.5.3 | 260 | 4.92% |
| 6.5.6 | 209 | 3.95% |
| 6.0.2 | 189 | 3.57% |
| 6.0.3 | 170 | 3.21% |
| 6.5.0 | 160 | 3.03% |
| 5.5.5 | 153 | 2.89% |
| 6.0.1 | 104 | 1.97% |
| 7.0.1 | 96 | 1.82% |
| 5.5.4 | 57 | 1.08% |
| Other | 185 | 3.50% |
| Trend Micro (4,717 servers) |
 |
|
| Version |
Number of Servers |
Percent |
| 5.5 | 3,581 | 75.92% |
| 5.7 | 604 | 12.80% |
| 5.18 | 436 | 9.24% |
| 5.15 | 65 | 1.38% |
| Other | 31 | 0.66% |
| Kerio (3,444 servers) |
 |
|
| Version |
Number of Servers |
Percent |
| 6.1.3 | 1,020 | 29.62% |
| 6.1.2 | 514 | 14.92% |
| 6.1.0 | 322 | 9.35% |
| 6.1.1 | 228 | 6.62% |
| 6.0.10 | 214 | 6.21% |
| 6.0.3 | 133 | 3.86% |
| 6.0.8 | 107 | 3.11% |
| 5.7.10 | 94 | 2.73% |
| 6.0.6 | 81 | 2.35% |
| 6.0.9 | 79 | 2.29% |
| 6.0.7 | 67 | 1.95% |
| 6.1.4 | 59 | 1.71% |
| 5.7.4 | 46 | 1.34% |
| 6.0.1 | 46 | 1.34% |
| 5.7.9 | 46 | 1.34% |
| 6.0.4 | 42 | 1.22% |
| 6.0.5 | 40 | 1.16% |
| 6.0.0 | 35 | 1.02% |
| Other | 271 | 7.87% |
| WinWebMail (3,444 servers) |
 |
|
| Version |
Number of Servers |
Percent |
| 3.6.3.1 | 1,313 | 38.12% |
| 3.7.0.5 | 744 | 21.60% |
| 3.7.0.7 | 731 | 21.23% |
| 3.7.0.3 | 473 | 13.73% |
| 3.7.1.1 | 123 | 3.57% |
| 3.7.0.1 | 46 | 1.34% |
| Other | 14 | 0.41% |
| ArGoSoft (3,288 servers) |
 |
|
| Version |
Number of Servers |
Percent |
| 1.8 (1.8.8.7) | 858 | 26.09% |
| 1.8 (1.8.8.1) | 246 | 7.48% |
| 1.8 (1.8.8.5) | 184 | 5.60% |
| 1.8 (1.8.8.3) | 179 | 5.44% |
| 1.8 (1.8.6.0) | 166 | 5.05% |
| 1.8 (1.8.8.2) | 148 | 4.50% |
| 1.8 (1.8.8.4) | 145 | 4.41% |
| 1.8 (1.8.8.6) | 144 | 4.38% |
| 1.8 (1.8.7.5) | 109 | 3.32% |
| 1.8 (1.8.5.9) | 75 | 2.28% |
| 1.8 (1.8.7.6) | 64 | 1.95% |
| 1.8 (1.8.6.6) | 59 | 1.79% |
| 1.8 (1.8.7.3) | 58 | 1.76% |
| 1.8 (1.8.7.7) | 48 | 1.46% |
| 1.8 (1.8.8.0) | 44 | 1.34% |
| 1.8 (1.8.3.6) | 36 | 1.09% |
| 1.8 (1.8.7.1) | 36 | 1.09% |
| 1.8 (1.8.4.7) | 34 | 1.03% |
| Other | 655 | 19.92% |
| NetIQ MailMarshal (2,487 servers) |
 |
|
| Version |
Number of Servers |
Percent |
| 6.0.3.8 | 1,740 | 69.96% |
| 5.5.6.7 | 224 | 9.01% |
| 6.1.3.15 | 131 | 5.27% |
| 5.5.5.9 | 74 | 2.98% |
| 5.5.4.16 | 69 | 2.77% |
| 5.5.6.6 | 58 | 2.33% |
| 5.5.6.5 | 49 | 1.97% |
| 5.5.5.6 | 33 | 1.33% |
| 5.5.4.17 | 32 | 1.29% |
| Other | 77 | 3.10% |
| XMail (2,228 servers) |
 |
|
| Version |
Number of Servers |
Percent |
| 1.22 | 649 | 29.13% |
| 1.21 | 609 | 27.33% |
| 1.20 | 330 | 14.81% |
| 1.17 | 241 | 10.82% |
| 1.18 | 96 | 4.31% |
| 1.12 | 69 | 3.10% |
| 1.16 | 50 | 2.24% |
| 1.10 | 46 | 2.06% |
| 1.11 | 37 | 1.66% |
| 1.15 | 33 | 1.48% |
| Other | 68 | 3.05% |
| Interscan (1,902 servers) |
 |
|
| Version |
Number of Servers |
Percent |
| 3.55 (build 1016) | 486 | 25.55% |
| 3.81-Build_1022 | 210 | 11.04% |
| 3.53 (build 2011) | 197 | 10.36% |
| 3.55 (build 1029) | 153 | 8.04% |
| 3.8-Build_3013 | 144 | 7.57% |
| 3.53 (build 2017) | 137 | 7.20% |
| 3.53 (build 2013) | 103 | 5.42% |
| 3.52 (build 1375) | 77 | 4.05% |
| 3.55 (build 1020) | 55 | 2.89% |
| 3.53 (build 1493) | 52 | 2.73% |
| 3.8-Build_1080 | 41 | 2.16% |
| 3.81-Build_1055 | 22 | 1.16% |
| 3.55 (build 1018) | 22 | 1.16% |
| 3.81-Build_1032 | 20 | 1.05% |
| Other | 183 | 9.62% |
| Post.Office (1,566 servers) |
 |
|
| Version |
Number of Servers |
Percent |
| 3.5.3 | 641 | 40.93% |
| 3.5.3J | 152 | 9.71% |
| 3.8.3 | 80 | 5.11% |
| 3.6.3 | 67 | 4.28% |
| 3.6.2 | 67 | 4.28% |
| 3.1.2J | 57 | 3.64% |
| 3.1.2 | 55 | 3.51% |
| 3.9.1 | 46 | 2.94% |
| 3.5.2 | 44 | 2.81% |
| 3.8.4 | 40 | 2.55% |
| 3.9.2 | 32 | 2.04% |
| 3.9.0 | 30 | 1.92% |
| 3.6.0 | 29 | 1.85% |
| 3.6 | 27 | 1.72% |
| 4.0.0.2 | 24 | 1.53% |
| 3.9.1.3 | 16 | 1.02% |
| 4.0.0.1 | 16 | 1.02% |
| Other | 143 | 9.13% |
| SurgeSMTP (1,541 servers) |
 |
|
| Version |
Number of Servers |
Percent |
| 3.6f5-5 | 590 | 38.29% |
| 3.0c2-2 | 158 | 10.25% |
| 3.5b3-3 | 155 | 10.06% |
| 3.7b3-3 | 107 | 6.94% |
| 2.1c7-7 | 49 | 3.18% |
| 3.7c-3 | 35 | 2.27% |
| 3.7b5-5 | 31 | 2.01% |
| 2.2c10-10 | 29 | 1.88% |
| 1.6e2 | 27 | 1.75% |
| 3.7a-15 | 27 | 1.75% |
| 3.7b-2 | 25 | 1.62% |
| 2.0g2-1 | 25 | 1.62% |
| 3.6f3-3 | 24 | 1.56% |
| 1.8g3 | 22 | 1.43% |
| 3.7c-14 | 20 | 1.30% |
| Other | 217 | 14.08% |
| InterScan VirusWall (1,362 servers) |
 |
|
| Version |
Number of Servers |
Percent |
| Other | 1,362 | 100.00% |
| ModusMail (1,361 servers) |
 |
|
| Version |
Number of Servers |
Percent |
| 4.3.459.0 | 583 | 42.84% |
| 4.2.425.22 | 173 | 12.71% |
| 4.1.361.21 | 153 | 11.24% |
| 4.2.425.4 | 96 | 7.05% |
| 4.2.425.16 | 75 | 5.51% |
| 3.2.315.0 | 58 | 4.26% |
| 4.2.407.0 | 32 | 2.35% |
| 4.1.361.0 | 29 | 2.13% |
| 3.1.302.0 | 27 | 1.98% |
| 4.0.340.0 | 18 | 1.32% |
| 3.1.297.0 | 17 | 1.25% |
| 4.2.420.0 | 14 | 1.03% |
| Other | 86 | 6.32% |
| Qmail Toaster (818 servers) |
 |
|
| Version |
Number of Servers |
Percent |
| 1.2 | 645 | 78.85% |
| 1.0 | 171 | 20.90% |
| Other | 2 | 0.24% |
| VisNetic (775 servers) |
 |
|
| Version |
Number of Servers |
Percent |
| 8.3.5.0 | 99 | 12.77% |
| 8.0.3.0 | 70 | 9.03% |
| 7.2.4.1 | 68 | 8.77% |
| 5.8.6.6 | 62 | 8.00% |
| 7.6.1.0 | 59 | 7.61% |
| 5.0.2.3 | 50 | 6.45% |
| 8.0.3.1 | 49 | 6.32% |
| 6.2.2.0 | 47 | 6.06% |
| 8.3.6 | 34 | 4.39% |
| 5.5.8.3 | 27 | 3.48% |
| 8.0.3 | 25 | 3.23% |
| 7.5.3.0 | 25 | 3.23% |
| 5.4.5.4 | 24 | 3.10% |
| 8.3.0.1 | 20 | 2.58% |
| 5.8.6.4 | 18 | 2.32% |
| 5.3.5.0 | 16 | 2.06% |
| 6.0.9.0 | 12 | 1.55% |
| 5.0.1 | 12 | 1.55% |
| 5.0.2.1 | 10 | 1.29% |
| 7.2.4.0 | 9 | 1.16% |
| Other | 39 | 5.03% |
| MAILsweeper (627 servers) |
 |
|
| Version |
Number of Servers |
Percent |
| 4.3.19.0 | 120 | 19.14% |
| 4.3.12.0 | 117 | 18.66% |
| 4.3.14.0 | 112 | 17.86% |
| 4.3.17.0 | 102 | 16.27% |
| 4.2.10.0 | 40 | 6.38% |
| 4.3.1.0 | 35 | 5.58% |
| 4.2.5.0 | 26 | 4.15% |
| 4.3.10.0 | 25 | 3.99% |
| 4.3.6.0 | 21 | 3.35% |
| 4.2.1.0 | 18 | 2.87% |
| Other | 11 | 1.75% |
| Mercury (474 servers) |
 |
|
| Version |
Number of Servers |
Percent |
| 1.48 | 210 | 44.30% |
| 3.32 | 162 | 34.18% |
| 3.21c | 38 | 8.02% |
| 3.31 | 23 | 4.85% |
| 1.44 | 15 | 3.16% |
| 1.47 | 10 | 2.11% |
| 3.01a | 8 | 1.69% |
| Other | 8 | 1.69% |
| WebSTAR V (427 servers) |
 |
|
| Version |
Number of Servers |
Percent |
| 5.4.0 | 129 | 30.21% |
| 5.4.1 | 114 | 26.70% |
| 5.3.4 | 94 | 22.01% |
| 5.3.3 | 38 | 8.90% |
| 5.3.2 | 29 | 6.79% |
| 5.3.0 | 11 | 2.58% |
| 5.2.4 | 6 | 1.41% |
| 5.3.1 | 5 | 1.17% |
| Other | 1 | 0.23% |
| Mirapoint (420 servers) |
 |
|
| Version |
Number of Servers |
Percent |
| 3.7.3a-GA | 62 | 14.76% |
| 3.7.4b-GA | 45 | 10.71% |
| 3.7.2-GA | 43 | 10.24% |
| 3.7.1-GA | 40 | 9.52% |
| 3.5.8-GR | 36 | 8.57% |
| 3.7.5-GA | 36 | 8.57% |
| 3.7.0-GA | 17 | 4.05% |
| 3.5.9-GR | 17 | 4.05% |
| 3.7.3-GA | 16 | 3.81% |
| 3.6.5-GR | 13 | 3.10% |
| 3.6.4-CR | 12 | 2.86% |
| 1.1.0 | 10 | 2.38% |
| 3.6.6-GR | 9 | 2.14% |
| 3.5.7-GR | 7 | 1.67% |
| 3.5.3-GR | 6 | 1.43% |
| 3.4.6-GR | 5 | 1.19% |
| 3.5.6-GR | 5 | 1.19% |
| Other | 41 | 9.76% |
| MessageWall (215 servers) |
 |
|
| Version |
Number of Servers |
Percent |
| 1.0.8 | 180 | 83.72% |
| 1.0.9 | 14 | 6.51% |
| 1.1.23 | 7 | 3.26% |
| 1.1.0 | 6 | 2.79% |
| 1.0.6 | 5 | 2.33% |
| Other | 3 | 1.40% |
| WebSTAR (214 servers) |
 |
|
| Version |
Number of Servers |
Percent |
| Other | 214 | 100.00% |
| Neon Mail Server (148 servers) |
 |
|
| Version |
Number of Servers |
Percent |
| 3.0.7 | 88 | 59.46% |
| 3.0.9 | 24 | 16.22% |
| 3.0.8 | 19 | 12.84% |
| 3.0.6 | 11 | 7.43% |
| 3.0.5 | 3 | 2.03% |
| 3.0.4 | 3 | 2.03% |
| Other | 0 | 0.00% |
| OpenVMS (38 servers) |
 |
|
| Version |
Number of Servers |
Percent |
| 7.3 | 15 | 39.47% |
| 8.2 | 10 | 26.32% |
| 7.2 | 9 | 23.68% |
| 7.1 | 2 | 5.26% |
| 6.1 | 2 | 5.26% |
| Other | 0 | 0.00% |
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