M distro is RH9
i use sendmail+openwebmail. and use sasl authenticate my mail user.
I use Netscape mail client to receive and send mail is OK
but when i use my web site to send email,i get the following message.
as if i need setup authentication. but i don't know how to resolve it.


<<< 220 antims.dynserv.com ESMTP Sendmail 8.12.8/8.12.8; Mon, 22 Dec 2003 21:33:46 +0800
>>> EHLO antims.dynserv.com
<<< 250-antims.dynserv.com Hello dowellns.antims.dynserv.com [192.168.1.5], pleased to meet you<<< 250-ENHANCEDSTATUSCODES
<<< 250-PIPELINING
<<< 250-8BITMIME
<<< 250-SIZE
<<< 250-DSN
<<< 250-ETRN
<<< 250-AUTH LOGIN PLAIN
<<< 250-DELIVERBY
<<< 250 HELP
>>> MAIL FROM:<ray@antims.dynserv.com>
<<< 250 2.1.0 <ray@antims.dynserv.com>... Sender ok
>>> RCPT TO:<webmaster@netcore.com.cn>
<<< 550 5.7.1 <webmaster@netcore.com.cn>... Relaying denied. Proper authentication required.




Thanks
D.Z

Looks like the webmail is pointed at a different Mail server. I don't use openwebmail I use Squirrelmail, but it still has to be pointed at the correct smtp server. The last two lines indicate that you are trying to relay off of <webmaster@netcore.com.cn>. As a result you are being denied relay.