From: =?ISO-8859-1?L?%n%n%n%n?= <metaur@localhost>
To: =?ISO-8859-1?L?%n%n%n%n?= <metaur@localhost>
Subject: Testmail 2: format string bug in mail headers with unrecognized encoding
MIME-Version: 1.0
Content-Type: text/whatever

Testmail 2