[horde] attachements as links

[Alexandre BRYSBAERT]

Hello,
Sorry for my english but ...

I have a problem with horde/imp when i put an attachment in a mail.
The recipient receive a mail with a line:
http://my_server/horde/attachment.php?u=...........

The server is on an intranet et nobody can download the attachment
except from the inside.

How to send the attachement in the mail and not as a link under the
text.

Thanks you very much