550 relay not permitted Valid RCPT command must precede DATA
I have configured Sendmail and POP3 on my mail server. I have been able to send mail to outside domains but have not been able to receive mail from them. I get a message as follows:
The original message was received at Tue, 4 Mar 2008 16:15:33 +0200
from otherdomain.com [192.168.1.1]
----- The following addresses had permanent fatal errors -----
(reason: 550 relay not permitted)
----- Transcript of session follows -----
... while talking to mx0.myisp.com.:
<<< 550 relay not permitted
550 5.1.1 <firstname.lastname@example.org>... User unknown
<<< 503-All RCPT commands were rejected with this error:
<<< 503-relay not permitted
<<< 503 Valid RCPT command must precede DATA
I have used fictional domain for privacy. What could be the problem? Assistance will be greatly appreciated.
Last edited by chiyamhad; 03-05-2008 at 10:55 AM.