automated SMTP server survey 19991216
11176 servers queried in the last 90 days
5398 48.29 Sendmail
814 7.28 MS Exchange
626 5.60 unknown
587 5.25 qmail
293 2.62 IMail
259 2.31 Exim
234 2.09 Lotus
204 1.82 Netscape Mail server
190 1.70 Post.Office
179 1.60 CheckPoint FireWall-1
177 1.58 Raptor Firewall
158 1.41 NT Mail
157 1.40 ZMailer
138 1.23 Mercur
120 1.07 Smail
110 0.98 GroupWise
94 0.84 unknown (SMTP Rec.)
82 0.73 InterScan VirusWall
77 0.68 SMTP/cmap
74 0.66 AltaVista Firewall
73 0.65 Eudora/AIMS/Mailshare
72 0.64 Mercury
71 0.63 MS SMTP Mail
66 0.59 Postfix
60 0.53 Intermail
56 0.50 MailSite SMTP Receiver
52 0.46 NPlex
52 0.46 PMDF
45 0.40 MDaemon
43 0.38 EMWACS IMS
37 0.33 Obtuse wrapper
35 0.31 Sun
32 0.28 PP
29 0.25 Stalker
28 0.25 David PostMan
25 0.22 unknown (mailcity?)
24 0.21 Mail-Max
23 0.20 MailShield
22 0.19 WebShield
21 0.18 DSMTP
20 0.17 SLMail
19 0.17 Integralis SMTP Receiver
19 0.17 InterLock
19 0.17 SMTP-GW
16 0.14 FirstClass
16 0.14 Worldmail
13 0.11 IBM AS/400 SMTP
13 0.11 MMDF
12 0.10 IMA SMTP
12 0.10 Mail.Hub TurboSendmail
11 0.09 AltaVista Mail
11 0.09 AppleShare
10 0.08 GMX (qmail?)
10 0.08 TFS
9 0.08 ccMail
9 0.08 MX
8 0.07 FTGate
8 0.07 Lyris
8 0.07 Rapidsite
7 0.06 Connect2-SMTP
7 0.06 Quickmail
6 0.05 Interchange
5 0.04 Apple Internet Mail Server
5 0.04 Cyberguard or so
5 0.04 IBM VM SMTP
5 0.04 LSMTP
4 0.03 MMTA
4 0.03 UCX
4 0.03 USA.NET
4 0.03 Worldgroup
3 0.02 iSMTP
3 0.02 MailBeamer
3 0.02 SMTP/smtp-proxy
3 0.02 Tid InfoMail
3 0.02 usmtpd
2 0.01 Fwmail
2 0.01 Hawkeye SMTP
2 0.01 Kryptowall
2 0.01 Mail.Link
2 0.01 Postfix/VMailer
2 0.01 SiteClick
2 0.01 Soft-Switch LMS
2 0.01 Viking
1 0.00 Hummingbird SMTPD
1 0.00 IPAD
1 0.00 ListSTAR
1 0.00 mirabilis pager?
1 0.00 NASTA Gate SMTP Server
1 0.00 PowerWeb
1 0.00 TGV/CISCO-MultiNet
1 0.00 WatchGuard
1 0.00 WorldSecure