Very Computer

I use Kmail 1.4 and KDE 3.0.1.

Now until today, everything worked well, but suddenly, I
cannot send any mails. When I try to send a mail, I get the
error message

Sending failed:
The server didn't accept the sender address:
{mp009-rz3} Cannot resolve your domain - ungueltiger
Domain-Name in Adresse
The message will stay in the 'outbox' folder until you
either fix the problem (e.g. a broken address) or remove
the message from the 'outbox' folder.
Note: Other messages will also be blocked by this message,
as long as it is in the 'outbox' folder
The following transport protocol was used:
Default

Can anybody help me?
TIA,
--
Janos Blazi

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Are you sure your provider didn't change THEIR settings? And are you using a
genuine e-mail address everyewhere in your identity settings?

Yes. Absolutely sure. Now I reentered the relevant
information again from scratch and it works.
This is the second time KMail lets me down. (The first time
I lost all my settings).

Thank for your answer.    

--
J.... B....

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