Permanent Delivery Failure

[MDaemon]

The attached message had PERMANENT fatal delivery errors!

After one or more unsuccessful delivery attempts the attached message has
been removed from the mail queue on this server.  The number and frequency
of delivery attempts are determined by local configuration parameters.

YOUR MESSAGE WAS NOT DELIVERED TO ANY OF IT'S RECIPIENTS!

The following addresses did NOT receive a copy of your message: 

> address@hidden

--- Session Transcript ---
 Attempting SMTP connection to [172.18.18.216 : 25]
 Waiting for socket connection...
 Socket connection established
 Waiting for protocol initiation...
 220 tltg-excon1.ba.thw Microsoft ESMTP MAIL Service, Version: 5.0.2195.6713 
ready at  Fri, 23 Apr 2004 08:55:08 +0200
 EHLO thw.de
 250-tltg-excon1.ba.thw Hello [172.18.18.180]
 250-TURN
 250-ATRN
 250-SIZE
 250-ETRN
 250-PIPELINING
 250-DSN
 250-ENHANCEDSTATUSCODES
 250-8bitmime
 250-BINARYMIME
 250-CHUNKING
 250-VRFY
 250-X-EXPS GSSAPI NTLM LOGIN
 250-X-EXPS=LOGIN
 250-AUTH GSSAPI NTLM LOGIN
 250-AUTH=LOGIN
 250-X-LINK2STATE
 250-XEXCH50
 250 OK
 MAIL From:<address@hidden> SIZE=2480
 250 2.1.0 address@hidden OK
 RCPT To:<address@hidden>
 501 5.5.4 Invalid Address
 QUIT
--- End Transcript ---

: Message contains [1] file attachments