+If nmh has been compiled with SASL support, the `\-sasl' switch will enable
+the use of SASL authentication with the SMTP MTA. Depending on the
+SASL mechanism used, this may require an additional password prompt from the
+user (but the \*(lq.netrc\*(rq file can be used to store this password).
+`\-saslmech' switch can be used to select a particular SASL mechanism,
+and the the `\-user' switch can be used to select a authorization userid
+to provide to SASL other than the default.
+
+Currently SASL security layers are not supported for SMTP. The SASL
+SMTP code in nmh will always negotiate an unencrypted connection.
+