Newbie... error using it

I’ve been slowly stumbling my way through this… and finally i’m
stuck…

what’s going on & how do I fix it?

(we’re running Cobalt linux…)

AndrewFrom: Mail Delivery Subsystem MAILER-DAEMON@iris.whataboutmy.com
Date: Thu Jun 28, 2001 01:10:27 AM Australia/Sydney
To: andrew@rwts.com.au
Subject: Returned mail: User unknown

The original message was received at Wed, 27 Jun 2001 08:10:25 -0700
from ha1.rdc2.nsw.optushome.com.au [203.164.2.50]

----- The following addresses had permanent fatal errors -----

|"/usr/adm/sm.bin/rt-mailgate general correspond"
(expanded from: rt@iris.whataboutmy.com)

----- Transcript of session follows -----

Could not send mail :frowning:

Tried to launch this command: /usr/sbin/sendmail -oi -t -ODeliveryMode=b
-OErrorMode=m
550 |"/usr/adm/sm.bin/rt-mailgate general correspond"… User unknown
Reporting-MTA: dns; iris.whataboutmy.com
Received-From-MTA: DNS; ha1.rdc2.nsw.optushome.com.au
Arrival-Date: Wed, 27 Jun 2001 08:10:25 -0700

Final-Recipient: RFC822; rt@iris.whataboutmy.com
X-Actual-Recipient: RFC822; |/usr/adm/sm.bin/rt-mailgate general
correspond@iris.whataboutmy.com
Action: failed
Status: 5.1.1
Last-Attempt-Date: Wed, 27 Jun 2001 08:10:27 -0700
From: Andrew Yager andrew@rwts.com.au
Date: Thu Jun 28, 2001 01:10:19 AM Australia/Sydney
To: rt@iris.whataboutmy.com
Subject: testing… sendmail???

Andrew Yager
Real World Technology Solutions
Real People Real SolUtions™
ph: (02) 9945 2567 fax: (02) 9945 2566
mob: 0405 15 2568