E-Mail Server Survey Results for January 2003
Here are the results for our second monthly E-Mail Server Survey taken during the month of January, 2003. The process used to obtain the results was:
- Check random internet addresses for open port 25 (SMTP).
- Connect (TCP) to the open port, record banner
- Send "EHLO my.host.name", record EHLO response
- Send "HELP", record HELP response
- send "QUIT"
- Using Nmap, attempt to derive operating system guess and uptime data.
- Load the results into a SQL database for data analysis.
This month's sample size was 30,000 open SMTP ports.
Top Ten Operating Systems running E-Mail Servers
drill down to...OS versions or by Top Level Domain
Top Ten E-Mail Exchanger Software
drill down to...versions or by Top Level Domain
| Count | Share | Software |
|---|
| 6696 |
38.18% |
Sendmail |
| 2989 |
17.04% |
Microsoft IIS/Other |
| 2045 |
11.66% |
qmail |
| 1336 |
7.62% |
IMail |
| 1093 |
6.23% |
MS Exchange |
| 1052 |
6.00% |
Postfix |
| 1023 |
5.83% |
Exim |
| 461 |
2.63% |
Novell GroupWise |
| 369 |
2.10% |
smap |
| 192 |
1.09% |
Lotus Domino |
| 178 |
1.01% |
Post.Office |
| 106 |
0.60% |
InterScan VirusWall |
| 17540 |
TOTAL |
Table Notes
Total of 17540 servers gave unambiguous answers in banner or EHLO response.
Uptime Report (in days) for Top Ten Operating Systems
Operating
System | Average | Longest | # Reporting |
|---|
| Solaris | 96.854 | 496.917 | 2353 |
| Irix | 90.294 | 382.519 | 339 |
| BSDI | 85.642 | 656.438 | 476 |
| Linux | 77.414 | 496.242 | 6988 |
| FreeBSD | 70.758 | 527.829 | 826 |
| HP-UX | 51.928 | 325.035 | 75 |
| AIX | 38.094 | 321.459 | 214 |
| All | 75.236 | 680.917 | 14457 |
Table Notes
No data was reported for Microsoft Windows and others.
Comments & Conclusions
- Overall the uptimes shown this month are very consistent with last month (Dec. 2002).
- I dropped the graphs this month as it is too time consuming.
If you have comments or questions about this report please email smtpsurvey@credentia.cc.
Future Plans
- Next month will not include OS or Uptime data, just Software, as the process for determining them is deemed suspicious by some network administrators.
-
References
Software used in the collection and collation of this report
- Perl (v5.8.0) w/ DBI
- Nmap (v3.00)
- Netcat (v1.10_1)
- MySQL (v3.23.54a)
Disclaimer and Copyright
The information contained herein comes with no guarantee of accuracy.
The images, graphs, tables and all other textual data on this page is copyrighted and may not be used in Web pages, electronic, or written publications without the express written permission of Credentia.
©2003
Credentia
