fix: require From header for RFC 5322 compliance (matches Gmail spec)

forwardemail · Dec 23, 2019 · c01635e · c01635e
1 parent 1c22bec
commit c01635e
Showing 1 changed file with 6 additions and 2 deletions.
diff --git a/index.js b/index.js
@@ -514,8 +514,12 @@ class ForwardEmail {
         let rewriteFriendlyFrom = false;
         // headers object (includes the \r\n\r\n header and body separator)
         const { headers } = messageSplitter;
-        const originalFrom =
-          headers.getFirst('from') || session.envelope.mailFrom.address;
+        const originalFrom = headers.getFirst('from');
+
+        if (!originalFrom)
+          throw new CustomError(
+            'Your message is not RFC 5322 compliant, please include a valid "From" header.'
+          );
 
         // parse the from address and set a parsed reply-to if necessary
         const fromAddress = addressParser(originalFrom)[0];