Wrong addressor

[Ralf <ralf.mardorf@alice-dsl.net>]

If I try to send


From: Ralf <ralf.mardorf@alice-dsl.net>
To: Ralf <ralf.mardorf@alice-dsl.net>
Subject: Test 
User-Agent: Wanderlust/2.14.0 (Africa) SEMI/1.14.6 (Maruoka) FLIM/1.14.9
(Gojō) APEL/10.8 Emacs/23.1 (i686-pc-linux-gnu) MULE/6.0 (HANACHIRUSATO)
--text follows this line--
Test 04/27/2011 19:40


by


$ cat .wl
(setq starttls-use-gnutls t)
(setq starttls-gnutls-program "gnutls-cli")
(setq starttls-extra-arguments '("--insecure"))
(setq wl-smtp-connection-type 'starttls)

;; SMTP
(setq wl-smtp-posting-port 587)
(setq wl-smtp-authenticate-type "login")
(setq wl-smtp-posting-user "ralf.mardorf@alice-dsl.net")
(setq wl-smtp-posting-server "out.alice-dsl.net")
(setq wl-message-id-domain "alice-dsl.net")
(setq wl-local-domain "alice-dsl.net")


I get


Sending...
Opening STARTTLS connection to `out.alice-dsl.net:587'...done
byte-code: SMTP response error: 454, "5.7.3 Client does not have
permission to Send As this sender."


Note that after "M-x compose-mail" "From" is "Admin <edubuntu@edubuntu>"
I've simply overwritten it with the needed "Ralf
<ralf.mardorf@alice-dsl.net>". I suspect that the mail anyway is send as
edubuntu@edubuntu.

When I google for this error, until now I only got the information that
Alice does not allow to send with a wrong addressor name ;).

Any hints?

Ralf