hello all i am using vpopmail,qmail on redhat linux.The mail is going outside domain but easily send to local domains.. i do everything but can't thing working. 127.0.0.:allow,RELAYCLIENT="" in the /etc/tcp.smtp and /home/vpopmail/etc/tcp.smtp but all in vain. sir tell me what i do to remove this err--
"The message could not be sent because one of the recipients was rejected by the server. The rejected e-mail address was '[EMAIL PROTECTED]'. Subject 'helo mail', Account: 198.101.101.1, Server: 'example.com, Protocol: SMTP, Server Response: '553 sorry, that domain isn't in my list of allowed rcpthosts (#5.7.1)', Port: 25, Secure(SSL): No, Server Error: 553, Error Number: 0x800CCC79