Stefan Schueffler created EMAIL-124:
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Summary: Header values are folded twice and thus creating
defective emails
Key: EMAIL-124
URL: https://issues.apache.org/jira/browse/EMAIL-124
Project: Commons Email
Issue Type: Bug
Affects Versions: 1.3
Reporter: Stefan Schueffler
Priority: Blocker
With EMAIL-98, header values now are folded by commons-email.
Unfortunately, they are folded twice: once in "Mail.addHeader" or
"Mail.setHeaders", and once again in "Mail.buildMimeMessage()" while iterating
over the headers.
This results (in our test cases) in corrupted mail header lines having
additional blank lines between the first and second line of a folded value -
and thus ends in corrupted mails (as all headers after the first blank line are
threatened as mail-body-content).
As this renders "additional headers" useless in commons-mail and corrupts every
mail having additionl headers with longer-than-folding-size values, i set the
priority to blocker.
The fix seems to be easy: just fold either in addHeader and setHeaders, or in
buildMimeMessage (but not in both).
My preferred solution would be to fold in buildMimeMessage, and to store the
values "as-is" in addHeader and setHeaders so one is able to work with the
plain values (if neccessary) until the mail is actually build and send.
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