I receive so many delivery errors saying 'Host Unknown'  I know that the host e
xist ,  Can anyone tell me what might the problem be?
Thanks
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X-Delivery-Notice:  SMTP MAIL FROM does not correspond to sender.
Received: from ASUACAD (SMTP) by ASUVM.INRE.ASU.EDU (Mailer R2.08) with BSMTP
 id 0389; Sun, 28 Jun 92 13:04:42 MST
Date: Sun, 28 Jun 92 13:04:41 MST
From: <[log in to unmask]>
To: <[log in to unmask]>
Subject: Undeliverable Mail
 
ASUVM.INRE.ASU.EDU unable to deliver following mail to recipient(s):
    <[log in to unmask]>
550 Host 'FRITH.EGR.MSU.EDU' Unknown
 
           ** Text of Mail follows **
Received: from ASUVM.INRE.ASU.EDU by ASUVM.INRE.ASU.EDU (IBM VM SMTP V2R2)
   with BSMTP id 9357; Sun, 28 Jun 92 13:03:16 MST
Received: from ASUACAD.BITNET by ASUVM.INRE.ASU.EDU (Mailer R2.08) with BSMTP
 id 0359; Sun, 28 Jun 92 13:03:12 MST
Date:         Sun, 28 Jun 1992 12:59:02 MST
Reply-To:     The Pakistan News Service <[log in to unmask]>
 
 
Nauman K. Mysorewala
Coordinator Pakistan News Service
Owner Listserv, PAKISTAN@ASUACAD
Owner Listserv, MUSLIMS@ASUACAD (Muslim News Network)
Internet: [log in to unmask]
Bitnet  : PAKOWNER@ASUACAD