E-Mail Server Survey Results for April 2003
Here are the results for our third E-Mail Server Survey taken during the month of April, 2003. The process used to obtain the results was:
- Check random internet addresses for open port 25 (SMTP).
- Using the Perl Net::SMTP module, obtain banner, hostname and help output.
- Determine software category version information.
- Determine top-level domain (TLD).
- Load the results into a SQL database for data analysis.
This month's sample size was 37,563 open SMTP ports.
Top Ten E-Mail Exchanger Software
drill down to...versions or by Top Level Domain
| Count | Share | Software |
|---|
| 8244 |
38.78% |
Sendmail |
| 3707 |
17.44% |
Microsoft IIS/Other |
| 1981 |
9.32% |
qmail |
| 1789 |
8.42% |
IMail |
| 1244 |
5.85% |
Exim |
| 1243 |
5.85% |
smap |
| 825 |
3.88% |
CPMTA |
| 537 |
2.53% |
Postfix |
| 500 |
2.35% |
Microsoft Exchange |
| 340 |
1.60% |
CheckPoint FireWall-1 |
| 848 |
3.99% |
Other |
| 21258 |
TOTAL |
Table Notes
Total of 21258 servers gave unambiguous answers in banner or HELP response.
Comments & Conclusions
- smap and Exim are neck and neck!
- The vast majority of responding addresses were .mil sites.
If you have comments or questions about this report please email smtpsurvey@credentia.cc.
Future Plans
- Due to AUP policy violations (Comcast) this will be the last survey done. Apparently NASA and the U.S. Navy did not like the unsolicited connections.
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
