Sendmail has these errors--Domain of sender address <[email protected]> does not exist

Saikrishna <[email protected]> Thu, 5 Jul 2012 14:31:07 -0400
Newsgroups gmane.os.solaris.managers
Message-ID <CALSWnaxEHQQtr=QY=PHivjYWU=c26z5JkEsQ_vfzMVpDRB-21w@mail.gmail.com>
Does anyone have a clue of what is going on here? It was working few
days ago. /etc/hosts looks ok, sendmail does restart without any
errors, telnet is successful. I will be happy to send you guys any
output required.

Diagnostic-Code: SMTP; 553 #5.1.8 Domain of sender address
<[email protected]> does not exist

Domain of sender address <[email protected]> does not exist

[root@tiger mail]# /usr/lib/sendmail -Am -v [email protected] </dev/null
[email protected]... Connecting to sendmailtiger.time.com. via relay...
220 sendmailtiger.time.com ESMTP
>>> EHLO tiger.time.com
250-sendmailtiger.time.com
250-8BITMIME
250-SIZE 20971520
250 STARTTLS
>>> STARTTLS
220 Go ahead with TLS
>>> EHLO tiger.time.com
250-sendmailtiger.time.com
250-8BITMIME
250 SIZE 20971520
>>> MAIL From:<[email protected]>
553 #5.1.8 Domain of sender address <[email protected]> does not exist
/root/dead.letter... Saved message in /root/dead.letter
Closing connection to sendmailtiger.time.com.
>>> QUIT
221 sendmailtiger.time.com