[Mailman-Users] Is it possible only allow plain text into messages?

[Hans Glomme]

Hi everybody!

At first I want excuse my badly English.
Well does somenone know if it will be possible that it is only allowed
for  users to send mails to a list in plain text? Means that it is not
possible to send into an other format then text/plain?
-- 
Thnx for help me
Greetings
Hans

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