From: "D. J. Bernstein" <djb@cr.yp.to>
Message-ID: <19980509235750.27250.qmail@cr.yp.to>
Date: 9 May 1998 23:57:50 -0000
Mail-Followup-To: drums@cs.utk.edu
To: drums@cs.utk.edu
Subject: ehlo survey

I just did another SMTP server survey, using the 16 million IP addresses
found in the 199701 NW DNS walk.

8218 IP addresses responded, out of 200000 hosts. 72% accepted EHLO. The
following chart shows the percentage supporting various ESMTP options:

   46% 8bitmime
    1% auth=login
    0% checkpoint
    0% chunking
   41% dsn
    0% enhancedstatuscodes
    0% enhangedstatuscodes [sic]
   40% etrn
   58% expn
   70% help
   42% onex
    5% pipelining
    0% rset
    1% saml
    1% send
   68% size
    1% soml
    0% time
    0% tls
    0% turn
   36% verb
    3% vrfy
    0% x-rcptlimit
    0% x-turnme
    0% xadr
    1% xaud
    0% xdsn
    1% xexch50
    0% xgen
    1% xone
    1% xque
    2% xremotequeue
    0% xsta
    0% xtrn
   37% xusr
    1% xvrb

---Dan
50000 new aliases in 6 seconds. http://pobox.com/~djb/fastforward.html