automated SMTP server survey 19991116
11550 servers queried in the last 90 days
5654 48.95 Sendmail
847 7.33 MS Exchange
596 5.16 qmail
574 4.96 unknown
307 2.65 IMail
259 2.24 Exim
244 2.11 Lotus
210 1.81 Netscape Mail server
200 1.73 Post.Office
181 1.56 Raptor Firewall
179 1.54 CheckPoint FireWall-1
161 1.39 ZMailer
156 1.35 NT Mail
139 1.20 Mercur
124 1.07 Smail
114 0.98 GroupWise
98 0.84 unknown (SMTP Rec.)
82 0.70 InterScan VirusWall
81 0.70 SMTP/cmap
78 0.67 AltaVista Firewall
75 0.64 Mercury
72 0.62 Eudora/AIMS/Mailshare
72 0.62 Postfix
68 0.58 MS SMTP Mail
61 0.52 Intermail
60 0.51 MailSite SMTP Receiver
52 0.45 PMDF
51 0.44 MDaemon
48 0.41 EMWACS IMS
48 0.41 NPlex
41 0.35 Obtuse wrapper
38 0.32 Sun
34 0.29 PP
32 0.27 Stalker
28 0.24 Mail-Max
27 0.23 David PostMan
26 0.22 unknown (mailcity?)
24 0.20 SLMail
24 0.20 WebShield
23 0.19 DSMTP
22 0.19 MailShield
21 0.18 Integralis SMTP Receiver
21 0.18 InterLock
18 0.15 SMTP-GW
17 0.14 Worldmail
16 0.13 FirstClass
14 0.12 IBM AS/400 SMTP
13 0.11 AltaVista Mail
13 0.11 Mail.Hub TurboSendmail
13 0.11 MMDF
12 0.10 IMA SMTP
11 0.09 AppleShare
11 0.09 MX
11 0.09 TFS
8 0.06 Apple Internet Mail Server
8 0.06 Connect2-SMTP
8 0.06 FTGate
8 0.06 GMX (qmail?)
8 0.06 Lyris
7 0.06 ccMail
7 0.06 IBM VM SMTP
7 0.06 Rapidsite
6 0.05 Hawkeye SMTP
6 0.05 Quickmail
6 0.05 Rocketmail
5 0.04 Cyberguard or so
5 0.04 Interchange
5 0.04 UCX
4 0.03 LSMTP
4 0.03 MMTA
4 0.03 Worldgroup
3 0.02 IPAD
3 0.02 iSMTP
3 0.02 Mail.Link
3 0.02 MailBeamer
3 0.02 Soft-Switch LMS
3 0.02 Tid InfoMail
3 0.02 USA.NET
3 0.02 usmtpd
2 0.01 Fwmail
2 0.01 Kryptowall
2 0.01 PowerWeb
2 0.01 SiteClick
2 0.01 SMTP/smtp-proxy
2 0.01 Viking
1 0.00 Hummingbird SMTPD
1 0.00 mirabilis pager?
1 0.00 NASTA Gate SMTP Server
1 0.00 Postfix/VMailer
1 0.00 TGV/CISCO-MultiNet
1 0.00 WatchGuard
1 0.00 WorldSecure