I have configured sendmail and also openwebmail for that and these things are working greatly except for yahoo.I couln't send or receive mails to yahoo mail.When i send a mail from my server to yahoo mail server the error shown below is being displayed.Could any one please help me out with this error..

Rgds
Balu


>>> Net::SMTP(2.29)
>>> Net::Cmd(2.26)
>>> Exporter(5.567)
>>> IO::Socket::INET(1.26)
>>> IO::Socket(1.27)
>>> IO::Handle(1.21)
<<< 220 penguin1.kransoftware.com ESMTP Sendmail 8.12.8/8.12.8; Wed, 20 Apr 2005 15:15:21 +0530
>>> EHLO www.kransoftware.com
<<< 250-penguin1.kransoftware.com Hello localhost.localdomain [127.0.0.1], pleased to meet you
<<< 250-ENHANCEDSTATUSCODES
<<< 250-PIPELINING
<<< 250-8BITMIME
<<< 250-SIZE
<<< 250-DSN
<<< 250-ETRN
<<< 250-DELIVERBY
<<< 250 HELP
>>> MAIL FROM:<balagopal@www.kransoftware.com>
<<< 250 2.1.0 <balagopal@www.kransoftware.com>... Sender ok
>>> RCPT TO:<bpl108@yahoo.com>
<<< 553 5.3.0 <bpl108@yahoo.com>... REALY
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