client helo

1 files changed, 17 insertions, 2 deletions

diff --git a/doc/doc-txt/experimental-spec.txt b/doc/doc-txt/experimental-spec.txt
index 3dbf13f9d..c22288bed 100644
--- a/doc/doc-txt/experimental-spec.txt
+++ b/doc/doc-txt/experimental-spec.txt
@@ -1278,7 +1278,7 @@ RFCs 6530, 6533, 5890
 
 Compile with EXPERIMENTAL_INTERNATIONAL and libidn.
 
-Main config option smtputf8_advertise_hosts, default '*',
+New main config option smtputf8_advertise_hosts, default '*',
 a host list.  If this matches the sending host and
 accept_8bitmime is true (the default) then the ESMTP option
 SMTPUTF8 will be advertised.
@@ -1291,15 +1291,30 @@ The option allow_utf8_domains is set to true for this
 message. All DNS lookups are converted to a-label form
 whatever the setting of allow_utf8_domains.
 
+Both localparts and domain are maintained as the original
+utf8 form internally; any matching or regex use will
+require appropriate care.  Filenames created, eg. by
+the appendfile transport, will have utf8 name.
+
+Helo names sent by the smtp transport will have any utf8
+components expanded to a-label form.
+
 Log lines and Received-by: header lines will aquire a "utf8"
 prefix on the protocol element, eg. utf8esmtp.
 
-Expansion operators:
+New expansion operators:
 	${utf8_domain_to_alabel:str}
 	${utf8_domain_from_alabel:str}
 	${utf8_localpart_to_alabel:str}
 	${utf8_localpart_from_alabel:str}
 
+Known issues:
+ - Currently LMTP is not supported.
+ - DSN unitext handling is not present
+ - no provision for converting logging from UTF-8
+ - VRFY and EXPN not handled
+ - non-smtp input not handled  (!)
+ - MSA mode not handled (!)
 
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 End of file