Sebb created EMAIL-171:
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Summary: buildMimeMessage() unconditionally encodes and folders
header values
Key: EMAIL-171
URL: https://issues.apache.org/jira/browse/EMAIL-171
Project: Commons Email
Issue Type: Bug
Reporter: Sebb
The buildMimeMessage() method unconditionally calls MimeUtility#fold and
MimeUtility#encodeText for all entries in the headers Map.
However the encodeText method is only suitable for "unstructured" RFC 822
headers, i.e. those which consist of arbitrary text.
If the headers Map contains any keys that have structured values, and the value
contains any non-ASCII characters, then generated header may be corrupted.
If the user adds a structured header to the Map, they need to ensure that the
value is already ASCII-encoded using the appropriate strategy for the field.
This needs to be documented.
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