#18 Sending mail with SMTP -> header error

[Anonymous]

When sending email, my SMTP server on the web replies
with:

The original message was received at Wed, 3 Oct 2001
02:03:34 +0200
from smtp01.dlan.cinetic.de [172.20.0.189]

----- The following addresses had permanent fatal
errors -----
<xxyyzz@xy.z>
(reason: 553 5.0.0 Header error)

----- Transcript of session follows -----
... while talking to pop3.win.net.:
>>> DATA
<<< 553 5.0.0 Header error
554 5.0.0 <xxyyzz@xy.z>... Service unavailable