I am getting Relay access denied if i am sending mail from my server to Yahoo.
eg: xxxx@sonicbusinessconsulting.com to yyyyy@yahoo.com I am getting relay access denied.

"and"


If i am sending to my own server to server it working fine.
eg: xxxx@sonicbusinessconsulting.com to zzzz@sonicbusinessconsulting.com
. It working fine.

Need help in solving.

Thanks
Bhaskar

MY Log:

SMTP Connection:
OK, connected to sonicbusinessconsulting.com...
< 220 yyyy.sonicbusinessconsulting.com ESMTP Postfix

(Postfix-20010228-pl08) (Mandrake Linux)
> HELO edit.dnsvr.com
< 250 yyyy.sonicbusinessconsulting.com
> MAIL FROM:<yyyyyy@sonicbusinessconsulting.com>
< 250 Ok
> RCPT TO:<xxxxx@yahoo.com>
< 554 <xxxx@yahoo.com>: Relay access denied



SMTP Connection:
OK, connected to sonicbusinessconsulting.com...
< 220 yyyy.sonicbusinessconsulting.com ESMTP Postfix

(Postfix-20010228-pl08) (Mandrake Linux)
> HELO edit.dnsvr.com
< 250 yyyyy.sonicbusinessconsulting.com
> MAIL FROM:<yyyyy@sonicbusinessconsulting.com>
< 250 Ok
> RCPT TO:<zzzzzz@sonicbusinessconsulting.com>
< 250 Ok
> DATA
< 354 End data with <CR><LF>.<CR><LF>
> From: yyyyyy@sonicbusinessconsulting.com
> To: zzzzzz@sonicbusinessconsulting.com
> Subject: ZoneEdit Automated SMTP Test

(sonicbusinessconsulting.com)
>
> If you received this, then the mail server

(sonicbusinessconsulting.com) is probably working.
> Sent at 2005-03-29 12:24:09 by 144.160.5.25 using Mozilla/4.0

(compatible; MSIE 6.0; Windows NT 5.0; SBC; .NET CLR 1.1.4322)
> .
< 250 Ok: queued as AC9A71D8C4

There are many reasons as to why yahoo.com would block you.

- Your IP is listed somewhere in a real-time blackhole list (RBL).

- Your mail server has no reverse DNS set (although I'm not aware that yahoo checks for reverse DNS).

- Your mail server isn't using an IP address that can be resolved to your domain, or somehow is using a different IP address in the mail headers than are being sent to yahoo, and yahoo thinks you're spoofing your IP address.

Testing between your own servers has little relevance other than you can send mail internally. Sending externally - as you've seen - is much different. <G>

Jon Johnston
Creative Business Solutions
IBM, Microsoft, Novell/Suse and Sophos Consulting
952-544-1108
http://www.cbsol.com
Blog:http://bingo.cbsol.com