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Mail (MX) Server Survey
June 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 |
 |
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 | 1,862,302 | 100.0% |
Number of Servers that didn't respond | 291,129 | 15.63% |
Server didn't open socket | 279,896 | 15.03% |
Server didn't provide banner | 11,233 | 0.60% |
Server provided banner | 1,571,173 | 84.37% |
Server banner identifies software in use | 923,271 | 49.58% |
As indicated by the above table, of the 1,862,302 servers
queried, only 923,271 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 | 233,001 | 25.24% |
Exim | 213,619 | 23.14% |
Microsoft | 202,524 | 21.94% |
Postfix | 154,011 | 16.68% |
MailEnable | 24,384 | 2.64% |
IMail | 23,795 | 2.58% |
MDaemon | 22,969 | 2.49% |
Lotus Domino | 6,714 | 0.73% |
Merak | 5,850 | 0.63% |
Kerio | 5,826 | 0.63% |
WinWebMail | 4,998 | 0.54% |
CommuniGate Pro | 4,857 | 0.53% |
Trend Micro | 2,992 | 0.32% |
GroupWise | 2,837 | 0.31% |
XMail | 2,695 | 0.29% |
ArGoSoft | 2,572 | 0.28% |
SurgeSMTP | 1,794 | 0.19% |
Qmail Toaster | 1,719 | 0.19% |
Gordano Messaging Suite (GMS) | 977 | 0.11% |
Post.Office | 884 | 0.10% |
InterScan VirusWall | 642 | 0.07% |
NetIQ MailMarshal | 604 | 0.07% |
Mirapoint | 598 | 0.06% |
VisNetic | 506 | 0.05% |
Interscan | 475 | 0.05% |
MagicMail | 413 | 0.04% |
WebSTAR V | 203 | 0.02% |
Mercury | 193 | 0.02% |
Neon Mail Server | 181 | 0.02% |
ModusMail | 169 | 0.02% |
MAILsweeper | 84 | 0.01% |
WebSTAR | 79 | 0.01% |
MessageWall | 74 | 0.01% |
OpenVMS | 32 | 0.00% |
Detailed Breakdown of Revisions on a Per-Server Basis |
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Sendmail (233,001 servers) |
 |
|
Version |
Number of Servers |
Percent |
8.13.1 | 35,982 | 15.44% |
8.12.11.20060614 | 33,620 | 14.43% |
8.13.6 | 22,475 | 9.65% |
8.12.11.20060308 | 21,192 | 9.10% |
8.11.6 | 18,502 | 7.94% |
8.13.8 | 17,489 | 7.51% |
8.12.10 | 13,483 | 5.79% |
8.13.6.20060614 | 10,810 | 4.64% |
8.14.1 | 9,400 | 4.03% |
8.12.11 | 7,854 | 3.37% |
8.13.4 | 6,920 | 2.97% |
8.12.8 | 5,813 | 2.49% |
8.13.7 | 5,568 | 2.39% |
8.14.2 | 5,146 | 2.21% |
8.9.3 | 3,326 | 1.43% |
8.10.2 | 2,870 | 1.23% |
Other | 12,551 | 5.39% |
Exim (213,619 servers) |
 |
|
Version |
Number of Servers |
Percent |
4.68 | 144,374 | 67.58% |
4.63 | 27,454 | 12.85% |
4.67 | 6,757 | 3.16% |
4.60 | 5,747 | 2.69% |
4.50 | 5,532 | 2.59% |
4.66 | 5,224 | 2.45% |
4.69 | 5,109 | 2.39% |
4.62 | 4,246 | 1.99% |
Other | 9,176 | 4.30% |
Microsoft (202,524 servers) |
 |
|
Version |
Number of Servers |
Percent |
6.0.3790.3959 | 134,214 | 66.27% |
6.0.3790.1830 | 40,525 | 20.01% |
5.0.2195.6713 | 17,273 | 8.53% |
6.0.3790.211 | 6,293 | 3.11% |
Other | 4,219 | 2.08% |
Postfix (154,011 servers) |
 |
|
Version |
Number of Servers |
Percent |
Other | 154,011 | 100.00% |
MailEnable (24,384 servers) |
 |
|
Version |
Number of Servers |
Percent |
1.981-- | 5,999 | 24.60% |
1.983-- | 2,886 | 11.84% |
1.96-- | 1,547 | 6.34% |
1.95-- | 1,424 | 5.84% |
1.9-- | 1,209 | 4.96% |
1.8-- | 992 | 4.07% |
0-2.37- | 816 | 3.35% |
0-3.14- | 813 | 3.33% |
0-1.85- | 795 | 3.26% |
1.986-- | 602 | 2.47% |
0-2.38- | 441 | 1.81% |
0-2.36- | 418 | 1.71% |
0--3.14 | 395 | 1.62% |
0-3.04- | 375 | 1.54% |
0--2.37 | 299 | 1.23% |
0-2.52- | 255 | 1.05% |
Other | 5,118 | 20.99% |
IMail (23,795 servers) |
 |
|
Version |
Number of Servers |
Percent |
8.22 | 4,884 | 20.53% |
8.15 | 4,347 | 18.27% |
9.23 | 2,510 | 10.55% |
8.05 | 1,462 | 6.14% |
9.10 | 1,214 | 5.10% |
9.21 | 1,034 | 4.35% |
7.07 | 945 | 3.97% |
7.15 | 898 | 3.77% |
9.22 | 737 | 3.10% |
10.0 | 658 | 2.77% |
6.06 | 645 | 2.71% |
8.00 | 513 | 2.16% |
9.20 | 501 | 2.11% |
8.21 | 450 | 1.89% |
8.04 | 348 | 1.46% |
8.10 | 281 | 1.18% |
8.01 | 279 | 1.17% |
8.20 | 263 | 1.11% |
Other | 1,826 | 7.67% |
MDaemon (22,969 servers) |
 |
|
Version |
Number of Servers |
Percent |
9.6.5 | 5,390 | 23.47% |
9.6.4 | 1,967 | 8.56% |
9.6.1 | 1,394 | 6.07% |
9.6.2 | 1,268 | 5.52% |
8.1.3 | 981 | 4.27% |
9.5.6 | 948 | 4.13% |
9.6.3 | 901 | 3.92% |
9.0.4 | 885 | 3.85% |
9.5.2 | 776 | 3.38% |
9.5.1 | 702 | 3.06% |
6.8.5 | 559 | 2.43% |
7.2.3 | 519 | 2.26% |
7.2.0 | 449 | 1.95% |
9.0.1 | 418 | 1.82% |
9.5.5 | 366 | 1.59% |
8.0.2 | 342 | 1.49% |
9.0.0 | 341 | 1.48% |
8.1.4 | 326 | 1.42% |
9.5.4 | 292 | 1.27% |
9.6.0 | 280 | 1.22% |
8.1.1 | 276 | 1.20% |
8.1.5 | 246 | 1.07% |
9.5.3 | 232 | 1.01% |
8.0.3 | 230 | 1.00% |
Other | 2,881 | 12.54% |
Lotus Domino (6,714 servers) |
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|
Version |
Number of Servers |
Percent |
7.0.2 | 804 | 11.97% |
6.5.4 | 420 | 6.26% |
7.0.1 | 416 | 6.20% |
8.0.1 | 408 | 6.08% |
7.0.2FP2 | 402 | 5.99% |
7.0.3 | 374 | 5.57% |
6.5.1 | 362 | 5.39% |
6.5.3 | 315 | 4.69% |
8.0 | 277 | 4.13% |
6.5.5 | 271 | 4.04% |
7.0 | 267 | 3.98% |
6.5 | 227 | 3.38% |
7.0.2FP1 | 202 | 3.01% |
5.0.11 | 155 | 2.31% |
6.5.2 | 143 | 2.13% |
6.5.6 | 97 | 1.44% |
5.0.12 | 96 | 1.43% |
5.0.13a | 83 | 1.24% |
5.0.8 | 83 | 1.24% |
5.0.10 | 81 | 1.21% |
7.0.3FP1 | 76 | 1.13% |
7.0.1FP1 | 76 | 1.13% |
6.5.5FP2 | 75 | 1.12% |
6.5.4FP3 | 68 | 1.01% |
Other | 936 | 13.94% |
Merak (5,850 servers) |
 |
|
Version |
Number of Servers |
Percent |
8.0.3 | 2,125 | 36.32% |
8.9.1 | 665 | 11.37% |
8.5.0 | 410 | 7.01% |
7.4.5 | 287 | 4.91% |
8.3.8 | 268 | 4.58% |
7.5.2 | 261 | 4.46% |
7.6.4 | 255 | 4.36% |
9.0.0 | 146 | 2.50% |
7.4.2 | 137 | 2.34% |
7.2.0 | 97 | 1.66% |
8.2.4 | 88 | 1.50% |
6.2.1 | 83 | 1.42% |
7.6.1 | 75 | 1.28% |
8.9.0 | 66 | 1.13% |
8.3.0 | 61 | 1.04% |
Other | 826 | 14.12% |
Kerio (5,826 servers) |
 |
|
Version |
Number of Servers |
Percent |
6.5.0 | 1,913 | 32.84% |
6.4.1 | 784 | 13.46% |
6.4.2 | 673 | 11.55% |
6.3.1 | 658 | 11.29% |
6.4.0 | 448 | 7.69% |
6.3.0 | 240 | 4.12% |
6.2.2 | 97 | 1.66% |
6.1.3 | 95 | 1.63% |
6.2.0 | 88 | 1.51% |
6.1.0 | 86 | 1.48% |
6.0.10 | 78 | 1.34% |
6.1.4 | 72 | 1.24% |
6.1.2 | 70 | 1.20% |
6.0.3 | 60 | 1.03% |
Other | 464 | 7.96% |
WinWebMail (4,998 servers) |
 |
|
Version |
Number of Servers |
Percent |
3.7.3.1 | 1,460 | 29.21% |
3.7.1.1 | 854 | 17.09% |
3.7.6.1 | 771 | 15.43% |
3.7.5.1 | 526 | 10.52% |
3.6.3.1 | 462 | 9.24% |
3.7.0.5 | 387 | 7.74% |
3.7.0.7 | 247 | 4.94% |
3.7.0.3 | 236 | 4.72% |
Other | 55 | 1.10% |
CommuniGate Pro (4,857 servers) |
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|
Version |
Number of Servers |
Percent |
4.1.8 | 472 | 9.72% |
4.2.10 | 304 | 6.26% |
5.1.13 | 275 | 5.66% |
5.1.12 | 257 | 5.29% |
5.2.0 | 186 | 3.83% |
5.1.10 | 179 | 3.69% |
5.1.14 | 172 | 3.54% |
5.0.9 | 153 | 3.15% |
5.0.13 | 148 | 3.05% |
5.1.16 | 145 | 2.99% |
5.2.2 | 142 | 2.92% |
5.2.1 | 128 | 2.64% |
5.1.9 | 112 | 2.31% |
5.1.7 | 107 | 2.20% |
5.1.8 | 105 | 2.16% |
5.1.11 | 100 | 2.06% |
4.2.8 | 76 | 1.56% |
5.0.14 | 75 | 1.54% |
4.2 | 75 | 1.54% |
4.2.7 | 71 | 1.46% |
4.2.9 | 70 | 1.44% |
5.1.5 | 66 | 1.36% |
5.0.11 | 65 | 1.34% |
4.0.6 | 64 | 1.32% |
5.0.8 | 58 | 1.19% |
5.1.3 | 58 | 1.19% |
4.3.12 | 57 | 1.17% |
5.2 | 53 | 1.09% |
5.2.3 | 53 | 1.09% |
Other | 1,031 | 21.23% |
Trend Micro (2,992 servers) |
 |
|
Version |
Number of Servers |
Percent |
5.7 | 1,395 | 46.62% |
5.5 | 1,061 | 35.46% |
5.18 | 398 | 13.30% |
7.0 | 86 | 2.87% |
5.15 | 30 | 1.00% |
Other | 22 | 0.74% |
GroupWise (2,837 servers) |
 |
|
Version |
Number of Servers |
Percent |
7.0.2 | 820 | 28.90% |
7.0.3 | 381 | 13.43% |
7.0.1 | 329 | 11.60% |
6.5.7 | 324 | 11.42% |
6.5.4 | 214 | 7.54% |
6.5.6 | 140 | 4.93% |
6.0.4 | 124 | 4.37% |
6.5.5 | 92 | 3.24% |
7.0 | 89 | 3.14% |
6.5.1 | 85 | 3.00% |
6.5.2 | 39 | 1.37% |
6.5.3 | 30 | 1.06% |
6.0.2 | 30 | 1.06% |
Other | 140 | 4.93% |
XMail (2,695 servers) |
 |
|
Version |
Number of Servers |
Percent |
1.22 | 845 | 31.35% |
1.24 | 578 | 21.45% |
1.25 | 377 | 13.99% |
1.21 | 293 | 10.87% |
1.20 | 143 | 5.31% |
1.17 | 120 | 4.45% |
1.23 | 119 | 4.42% |
1.12 | 79 | 2.93% |
1.16 | 36 | 1.34% |
1.18 | 27 | 1.00% |
Other | 78 | 2.89% |
ArGoSoft (2,572 servers) |
 |
|
Version |
Number of Servers |
Percent |
1.8 (1.8.9.3) | 555 | 21.58% |
1.8 (1.8.9.1) | 362 | 14.07% |
1.8 (1.8.8.8) | 257 | 9.99% |
1.8 (1.8.8.7) | 225 | 8.75% |
1.8 (1.8.9.2) | 172 | 6.69% |
1.8 (1.8.9.5) | 148 | 5.75% |
1.8 (1.8.9.4) | 97 | 3.77% |
1.8 (1.8.8.9) | 92 | 3.58% |
1.8 (1.8.9.0) | 52 | 2.02% |
1.8 (1.8.8.1) | 50 | 1.94% |
1.8 (1.8.6.0) | 47 | 1.83% |
1.8 (1.8.8.2) | 45 | 1.75% |
1.8 (1.8.5.9) | 29 | 1.13% |
1.8 (1.8.7.5) | 27 | 1.05% |
1.8 (1.8.8.3) | 27 | 1.05% |
1.8 (1.8.8.4) | 26 | 1.01% |
Other | 361 | 14.04% |
SurgeSMTP (1,794 servers) |
 |
|
Version |
Number of Servers |
Percent |
3.9c-1 | 465 | 25.92% |
3.8k4-4 | 315 | 17.56% |
3.9e-1 | 212 | 11.82% |
3.8f3-3 | 94 | 5.24% |
3.7b8-8 | 86 | 4.79% |
3.8i3-3 | 84 | 4.68% |
3.6f5-5 | 65 | 3.62% |
3.5b3-3 | 58 | 3.23% |
3.8f2-2 | 50 | 2.79% |
3.0c2-2 | 40 | 2.23% |
3.9d-7 | 35 | 1.95% |
3.7b6-6 | 30 | 1.67% |
3.8k2-2 | 23 | 1.28% |
Other | 237 | 13.21% |
Qmail Toaster (1,719 servers) |
 |
|
Version |
Number of Servers |
Percent |
1.3 | 1,324 | 77.02% |
1.2 | 311 | 18.09% |
1.0 | 65 | 3.78% |
1.5 | 18 | 1.05% |
Other | 1 | 0.06% |
Gordano Messaging Suite (GMS) (977 servers) |
 |
|
Version |
Number of Servers |
Percent |
Other | 977 | 100.00% |
Post.Office (884 servers) |
 |
|
Version |
Number of Servers |
Percent |
3.5.3 | 229 | 25.90% |
4.0.1 | 89 | 10.07% |
3.5.3J | 60 | 6.79% |
3.6.3 | 50 | 5.66% |
3.8.3 | 48 | 5.43% |
3.6.2 | 35 | 3.96% |
3.9.1 | 34 | 3.85% |
3.9.2.3 | 30 | 3.39% |
3.1.2J | 26 | 2.94% |
3.9.2 | 23 | 2.60% |
3.9.0 | 22 | 2.49% |
3.8.7.4 | 22 | 2.49% |
3.1.2 | 21 | 2.38% |
3.8.4 | 20 | 2.26% |
4.1.0.2 | 16 | 1.81% |
4.1 | 14 | 1.58% |
3.5.2 | 14 | 1.58% |
4.0.0.2 | 14 | 1.58% |
3.8.2 | 12 | 1.36% |
3.9.2.1 | 11 | 1.24% |
4.0.0.1 | 11 | 1.24% |
3.9.1.3 | 10 | 1.13% |
Other | 73 | 8.26% |
InterScan VirusWall (642 servers) |
 |
|
Version |
Number of Servers |
Percent |
Other | 642 | 100.00% |
NetIQ MailMarshal (604 servers) |
 |
|
Version |
Number of Servers |
Percent |
6.0.3.8 | 462 | 76.49% |
6.1.3.15 | 36 | 5.96% |
5.5.6.7 | 36 | 5.96% |
5.5.6.6 | 14 | 2.32% |
5.5.5.9 | 12 | 1.99% |
5.5.4.16 | 11 | 1.82% |
5.5.6.5 | 9 | 1.49% |
5.5.5.6 | 8 | 1.32% |
Other | 16 | 2.65% |
Mirapoint (598 servers) |
 |
|
Version |
Number of Servers |
Percent |
3.8.4-GA | 122 | 20.40% |
3.8.3-GA | 98 | 16.39% |
3.8.6-GA | 87 | 14.55% |
3.8.5-GA | 71 | 11.87% |
3.7.5a-GA | 53 | 8.86% |
3.8.2-GA | 35 | 5.85% |
3.7.3a-GA | 23 | 3.85% |
3.7.4b-GA | 22 | 3.68% |
3.7.5-GA | 13 | 2.17% |
3.5.8-GR | 11 | 1.84% |
1.1.0 | 8 | 1.34% |
4.0.4-FCS | 6 | 1.00% |
3.7.1-GA | 6 | 1.00% |
Other | 43 | 7.19% |
VisNetic (506 servers) |
 |
|
Version |
Number of Servers |
Percent |
9.1.4.1 | 103 | 20.36% |
9.1.4.0 | 49 | 9.68% |
8.5.0.8 | 35 | 6.92% |
5.8.6.6 | 30 | 5.93% |
7.2.4.1 | 26 | 5.14% |
5.0.2.3 | 25 | 4.94% |
8.3.5.0 | 24 | 4.74% |
8.0.3.0 | 23 | 4.55% |
5.5.8.3 | 20 | 3.95% |
8.0.3.1 | 18 | 3.56% |
6.2.2.0 | 17 | 3.36% |
7.6.1.0 | 16 | 3.16% |
5.3.5.0 | 13 | 2.57% |
8.3.6 | 12 | 2.37% |
8.0.3 | 12 | 2.37% |
5.4.5.4 | 10 | 1.98% |
7.5.3.0 | 10 | 1.98% |
8.5.0.5 | 9 | 1.78% |
7.2.4.0 | 8 | 1.58% |
5.8.6.4 | 6 | 1.19% |
8.3.0.1 | 6 | 1.19% |
Other | 34 | 6.72% |
Interscan (475 servers) |
 |
|
Version |
Number of Servers |
Percent |
3.55 (build 1016) | 83 | 17.47% |
3.8-Build_3013 | 65 | 13.68% |
3.81-Build_1022 | 57 | 12.00% |
3.55 (build 1029) | 45 | 9.47% |
3.53 (build 2017) | 43 | 9.05% |
3.53 (build 2011) | 34 | 7.16% |
3.81-Build_1084 | 24 | 5.05% |
3.53 (build 2013) | 21 | 4.42% |
3.53 (build 1493) | 20 | 4.21% |
3.55 (build 1020) | 12 | 2.53% |
3.52 (build 1375) | 11 | 2.32% |
3.8-Build_1080 | 9 | 1.89% |
3.55 (build 1018) | 6 | 1.26% |
3.8-Build_3065 | 5 | 1.05% |
Other | 40 | 8.42% |
MagicMail (413 servers) |
 |
|
Version |
Number of Servers |
Percent |
Other | 413 | 100.00% |
WebSTAR V (203 servers) |
 |
|
Version |
Number of Servers |
Percent |
5.4.1 | 62 | 30.54% |
5.4.0 | 52 | 25.62% |
5.3.4 | 44 | 21.67% |
5.3.3 | 20 | 9.85% |
5.3.2 | 17 | 8.37% |
5.3.0 | 6 | 2.96% |
Other | 2 | 0.99% |
Mercury (193 servers) |
 |
|
Version |
Number of Servers |
Percent |
1.48 | 85 | 44.04% |
3.32 | 64 | 33.16% |
3.21c | 19 | 9.84% |
3.31 | 7 | 3.63% |
1.44 | 5 | 2.59% |
1.47 | 5 | 2.59% |
3.21 | 3 | 1.55% |
1.49 | 2 | 1.04% |
Other | 3 | 1.55% |
Neon Mail Server (181 servers) |
 |
|
Version |
Number of Servers |
Percent |
3.1.3 | 44 | 24.31% |
3.0.7 | 39 | 21.55% |
3.0.9 | 32 | 17.68% |
3.1.2 | 30 | 16.57% |
3.1.0 | 22 | 12.15% |
3.0.8 | 5 | 2.76% |
3.0.6 | 4 | 2.21% |
3.1.1 | 2 | 1.10% |
3.0.5 | 2 | 1.10% |
Other | 1 | 0.55% |
ModusMail (169 servers) |
 |
|
Version |
Number of Servers |
Percent |
4.35.480.0 | 70 | 41.42% |
4.1.361.21 | 23 | 13.61% |
3.2.315.0 | 17 | 10.06% |
4.35.477.0 | 12 | 7.10% |
4.35.480.11 | 7 | 4.14% |
4.3.459.0 | 7 | 4.14% |
3.1.302.0 | 6 | 3.55% |
4.2.420.0 | 5 | 2.96% |
3.1.293.1 | 3 | 1.78% |
4.1.361.0 | 3 | 1.78% |
4.0.340.0 | 3 | 1.78% |
4.2.425.4 | 2 | 1.18% |
4.2.420.1 | 2 | 1.18% |
4.4.568.0 | 2 | 1.18% |
Other | 7 | 4.14% |
MAILsweeper (84 servers) |
 |
|
Version |
Number of Servers |
Percent |
4.3.20.0 | 21 | 25.00% |
4.3.14.0 | 13 | 15.48% |
4.3.17.0 | 13 | 15.48% |
4.3.19.0 | 8 | 9.52% |
4.3.1.0 | 7 | 8.33% |
4.3.12.0 | 6 | 7.14% |
4.2.10.0 | 5 | 5.95% |
4.3.6.0 | 4 | 4.76% |
4.3.10.0 | 3 | 3.57% |
4.2.1.0 | 2 | 2.38% |
4.2.5.0 | 1 | 1.19% |
4.1.5.0 | 1 | 1.19% |
Other | 0 | 0.00% |
WebSTAR (79 servers) |
 |
|
Version |
Number of Servers |
Percent |
Other | 79 | 100.00% |
MessageWall (74 servers) |
 |
|
Version |
Number of Servers |
Percent |
1.0.8 | 57 | 77.03% |
1.0.11 | 15 | 20.27% |
1.1.0 | 2 | 2.70% |
Other | 0 | 0.00% |
OpenVMS (32 servers) |
 |
|
Version |
Number of Servers |
Percent |
8.3 | 12 | 37.50% |
7.3 | 9 | 28.12% |
8.2 | 6 | 18.75% |
7.2 | 4 | 12.50% |
6.1 | 1 | 3.12% |
Other | 0 | 0.00% |