Sending outbound mail

[ochienged]

My mail server is working well within my LAN without any errors. However, i cant send mail to a domain that is not hosted on my mail server. For instance, when i send mail to xxx@yahoo.com i get mail from MAILER-DAEMON@mail.mydomain.co.ke

he original message was received at Thu, 12 Jun 2008 15:01:17 +0300
from localhost.localdomain [127.0.0.1]

----- The following addresses had permanent fatal errors -----
<xxx@yahoo.com>
(reason: 554 5.7.1 <xxx@yahoo.com>: Relay access denied)

----- Transcript of session follows -----
... while talking to smtpin.myisp.com.:
>>> DATA
<<< 554 5.7.1 <xxx@yahoo.com>: Relay access denied
554 5.0.0 Service unavailable
<<< 554 5.5.1 Error: no valid recipients

NOTE:
1) SMART_HOST is set to smtpin.myisp.com
2) E-mail addresses have been censored for privacy
3) Mail from MAILER-DAEMON is generated from my mail server

[garyalex]

It looks like you have a problem relaying through your ISP. Have you tested maybe using telnet:

telnet smtpin.myisp.com 25
helo myhost.mydomain
mail from:user@mydomain.co.ke
rcpt to:xxx@yahoo.com
data
.

If you get any error messages there then it seems like a relay issue with your ISP and you would need to contact them. Maybe they require SMTP auth or your ip range is not allowed to relay through that server ...

[Lakshmipathi]

I agree with Gary ..try that telnet stuff.


Check your /var/log/maillog file contents ...It provides valuable info. about the problem



And also use gmail ...b'coz yahoo sometimes rejects mails considering it as spam.