UTF8: MSA downconversions

[exim.git] / doc / doc-txt / experimental-spec.txt

diff --git a/doc/doc-txt/experimental-spec.txt b/doc/doc-txt/experimental-spec.txt
index 819b47fd57fa2351de72c2fdcb6b4baf9a5c2c0d..234bac0ab3e16503d2cb3108b3006473f33a51cc 100644 (file)
--- a/doc/doc-txt/experimental-spec.txt
+++ b/doc/doc-txt/experimental-spec.txt
@@ -1308,12 +1308,22 @@ New expansion operators:
        ${utf8_localpart_to_alabel:str}
        ${utf8_localpart_from_alabel:str}
 
+New "control = utf8_downconvert" ACL modifier,
+sets a flag requiring that addresses are converted to
+a-label form before smtp delivery, for use in a
+Message Submission Agent context.  Can also be
+phrased as "control = utf8_downconvert/1" and is
+mandatory.  The flag defaults to zero and can be cleared
+by "control = utf8_downconvert/0".  The value "-1"
+may also be used, to use a-label for only if the
+destination host does not support SMTPUTF8.
+
 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
- - MSA mode not handled (!)
+ - mua_wrapper not handled
 
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