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-rw-r--r--doc/doc-txt/experimental-spec.txt12
1 files changed, 11 insertions, 1 deletions
diff --git a/doc/doc-txt/experimental-spec.txt b/doc/doc-txt/experimental-spec.txt
index 819b47fd5..234bac0ab 100644
--- 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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