what's going on "undeliverable mail"

[Egger Lothar]

hi

i get lots of this undeliverable mails

regards 
lothar

> -----Ursprüngliche Nachricht-----
> Von: Morten Rønseth [mailto:[EMAIL PROTECTED]]
> Gesendet: Dienstag, 24. April 2001 11:39
> An: [EMAIL PROTECTED]
> Betreff: Re: Problem with session tracking
> 
> 
> Undeliverable mail.
>