There a more troubles, this time caused by Lotus Notes
In the MIME-header i find both:
From: Anders Radler <email@example.com>
And sid-filter don't like it, so it reject this mail.
A (test)option to be more gentle to special cases, like
double "From:" headers [ 1377108 ] and "Sender:" and
"From:" where one of them are broken.
See also BugId:
[ 1377108 ]