Problem with posting

[Phillip Arena]

Can anyone please tell me why I keep getting Mailer-Daemon rejections 
of my posts with the following message?

Thanks
Failed to deliver to '<wamug@wamug.org.au>'
LIST module(list wamug) reports:
 Your message cannot be posted.
 It has the content-type: multipart/alternative,
 and this list accepts plain text only


Phil
--
Phillip Arena PhD

We have only ONE Earth