[Mailman-Users] Again on HTML emails

[Giulio Troccoli]

I need to send HTML email, or better I need to be able to do so. I've read
a lot of posts that say how to prevent HTML emails to be sent, but I can't
seem to be able to set mailman to accept them.

I used to use another system to manage my mailing lists that didn't have
any problems with HTML email. My "users" are used to receive HTML emails
so it's not a problem that they can't read them. I'm glad I changed the
old system to mailman and I will be fine even if I have to send plain text
emails. Still, I'd like to be able to send HTML.

I have a script that builds the email in a nice file and send it using
sendmail with the -t option. The email starts as follows

From: Giulio <giulio at troccoli.it>
To: test at troccoli.it
Subject:  Febbraio 2008
MIME-Version: 1.0
Content-Type: text/html; charset=us-ascii
Content-Transfer-Encoding: 7bit
Content-Disposition: inline; filename="email.html"
Content-Base: http://www.troccoli.it

and then some HTML.

Without any content filtering set up in mailman the email is delivered as
an HTML attachement, which is sort of alright. So I tried switching
content filtering on. I added text/html to the pass_mime_types (which now
contains multipart/mixed, multipart/alternative, text/plain and text/html)
but the email is now rejected (filter_mime_types is empty). I will
eventually set convert_html_to_plaintext to No, but I need to sort this
first. Anyone has any idea what I'm doing wrong? (and don't tell me, yes,
sending HTML emails :-)

Giulio