Fetchmail error 451 4.1.8 in slack9

From: N S Srikanth (nssrikanth_at_hotmail.com)
Date: 11/29/03 

Date: Sat, 29 Nov 2003 20:07:42 +0500

Hi All

If I give "fetchmail -u srikanthns -p pop3 mail.vsnl.com"
and when I give the password at the prompt it reports
an SMTP error in Slack9 and does not flush the mails.

The same procedure in RH9 retrieves the mails without
any problem and stores the mail in /var/spool/mail/srikanth.
That I read thru sylpheed. In both I did not give any other
switches or options.

Why it works in RH9 without any problem but not in Slack9?

Cheeka