The WELLKNOWN extension provides a means for delivering such information, by an
SMTP server on request from an SMTP client.
-2. The WELLKNOW SMTP Extension
+2. The WELLKNOWN SMTP Extension
------------------------------
The extension mechanism for SMTP is defined in Section 2.2 of the current SMTP
specification [RFC5321a].
-The name of the extension is WELKNOWN. Servers implementing this extension
+The name of the extension is WELLKNOWN. Servers implementing this extension
advertise a WELLKNOWN as a keyword in the response to EHLO. The keyword has no
parameters.