[log in to unmask] said:

> Interested people might want to have a look at
> http://listserv.surfnet.nl/archives/snn-html.html to see what I mean.

> My guess would be that WA expects every message to have either only a
> text/plain part or at least contains a text/plain as the first part.

Without Notebook-Header= Full in the list header you get a variant
of the LISTSERV ShortHeader in the archive logs.  It may be that
wa requires the MIME information that is missing from the message
headers without Notebook-Header= Full.

This is speculation on my part.

Glenn