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-rw-r--r--src/constants.cpp1
1 files changed, 1 insertions, 0 deletions
diff --git a/src/constants.cpp b/src/constants.cpp
index 5ca08960..494428a2 100644
--- a/src/constants.cpp
+++ b/src/constants.cpp
@@ -176,6 +176,7 @@ namespace fields
const string::value_type* const CONTENT_ID = "Content-Id";
const string::value_type* const CONTENT_LOCATION = "Content-Location";
const string::value_type* const IN_REPLY_TO = "In-Reply-To";
+ const string::value_type* const REFERENCES = "References";
const string::value_type* const X_MAILER = "X-Mailer";
const string::value_type* const X_PRIORITY = "X-Priority";