Default Address with multiple Addresses

[John Morris <2e0byo@gmail.com>]

Dear all,

I have the standard multiple-account setup via
`wl-user-mail-address-list', but although invoking ʽWʼ from the folder
buffer will start a draft from the correct folder (via
wl-draft-parent-folder), if I start composing with C-x m I am by
default sending from $LOGNAME@$HOSTNAME, which does not exist.  I can
select a new template with C-c C-j, at which point it behaves as
expected, but if I forget to do that I lose the email on sending to
some undisclosed Valhalla for unsent messages.

Is there any way to have the default buffer set a valid email address?
I have user-mail-address set, but that makes no difference...

I can provide details of the config if required, but itʼs straight of
emacswiki.

Many thanks,

John