[OE-core] Mailman refusing multipart/signed Content-Type

[Martin Jansa]

Hi, 

mailman always refuse gpg signed e-mails from me when I forgot to
disable default sign.

Complete header is:
Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="cvVnyQ+4j833TQvp"
Content-Disposition: inline

Mailman message is:
The message's content type was not explicitly allowed

Other LTG lists don't have problem with this, is it intentional or could
someone fix oe-core ML configuration?

Thanks

-- 
Martin 'JaMa' Jansa     jabber: Martin.Jansa at gmail.com