http://tools.ietf.org/html/rfc5322#section-3.4 can be angle-addr only when there is a non-empty display-name.
in To: header with roundcube
From: Benny Pedersen me@junc.org To: opendkim-users@lists.opendkim.org Subject: Re: adsp fail
there must imho not be < > around To: header here
example from mozilla
From: Alessandro Vesely vesely@tana.it User-Agent: Mozilla/5.0 (Windows NT 5.1; rv:17.0) Gecko/17.0 Thunderbird/17.0 To: opendkim-users@lists.opendkim.org Subject: Re: adsp fail
is more correct ?