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Old 03-29-2005, 01:43 PM   #1
LQ Newbie
Registered: Feb 2005
Posts: 2

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554 <>: Relay access denied

I am getting Relay access denied if i am sending mail from my server to Yahoo.
eg: to I am getting relay access denied.


If i am sending to my own server to server it working fine.
eg: to
. It working fine.

Need help in solving.


MY Log:

SMTP Connection:
OK, connected to
< 220 ESMTP Postfix

(Postfix-20010228-pl08) (Mandrake Linux)
< 250
< 250 Ok
> RCPT TO:<>
< 554 <>: Relay access denied

SMTP Connection:
OK, connected to
< 220 ESMTP Postfix

(Postfix-20010228-pl08) (Mandrake Linux)
< 250
< 250 Ok
> RCPT TO:<>
< 250 Ok
< 354 End data with <CR><LF>.<CR><LF>
> From:
> To:
> Subject: ZoneEdit Automated SMTP Test

> If you received this, then the mail server

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

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

Last edited by linuxkid; 03-29-2005 at 01:47 PM.
Old 03-30-2005, 01:06 AM   #2
Registered: Aug 2003
Location: Minnesota, USA
Distribution: RedHat, Suse
Posts: 106

Rep: Reputation: 15
There are many reasons as to why 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


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