[Enigmail] Encrypt newsposts

[Hajo Kirchhoff]

Hi all,
I want to use enigmail to encrypt posts to a private news server.
Presently enigmail complains: "Encrypted send operation aborted.\n\nThis
message cannot be encrypted because there are newsgroup recipients."

How can I disable this error message and have enigmail encrypt my post
with the key(s) I specified in the rules before it gets posted to the
news server?

Yes, I know about public/private keys schemes and that it is unusual to
use PGP for news. But I want to do it anyway, I know what I am doing and
the PGP plugin for Outlook support(ed) this. What about enigmail?

Is this feature intentionally disabled or just not implemented?

Regards

Hajo