<div><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">Hello, I am trying to setup Outlook Express (email client to setup mail accounts) , when I try to send mails outside my domain like @<a href="http://mydomain.com" target="_blank" onclick="return top.js.OpenExtLink(window,event,this)">mydomain.com</a> ie to yahoo or gmail or hotmail, I get this error message "The message could not be sent because one of the recipients was> rejected by the server. The rejected e-mail address was '<a href="mailto:janu@cs.unm.edu" target="_blank" onclick="return top.js.OpenExtLink(window,event,this)">janu@cs.unm.edu</a>'. Subject 'test', Account:'<a href="http://mail.relate24seven.com" target="_blank" onclick="return top.js.OpenExtLink(window,event,this)">mail.relate24seven.com</a><<a href="http://mail.relate24seven.com" target="_blank" onclick="return top.js.OpenExtLink(window,event,this)"> http://mail.relate24seven.com</a>>> ',> Server: '<a href="http://65.103.191.30" target="_blank" onclick="return top.js.OpenExtLink(window,event,this)">65.103.191.30</a> <<a href="http://65.103.191.30" target="_blank" onclick="return top.js.OpenExtLink(window,event,this)"> http://65.103.191.30</a>>', Protocol: SMTP, Server> Response: '550 5.7.1> <<a href="mailto:janu@cs.unm.edu" target="_blank" onclick="return top.js.OpenExtLink(window,event,this)">janu@cs.unm.edu</a>>... Relaying denied', Port: 25, Secure(SSL): No,> Server Error: 550, Error Number: 0x800CCC79.</blockquote><div> When I use pine on the server , I can send mails to everyone and recieve from everyone. </div><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;"> I can send mails to @<a href="http://relate24seven.com" target="_blank" onclick="return top.js.OpenExtLink(window,event,this)">relate24seven.com</a> in OE .If this is an OE problem , then I have the same problem with Thunderbird mail client too ; while sending emails it prompts fro password I type in the same password as used for incoming mail server which is the same as the outgoing one , and it does not work The following is the iptable file output : # Firewall configuration written by system-config-securitylevel # Manual customization of this file is not recommended. *filter :INPUT ACCEPT [0:0] :FORWARD ACCEPT [0:0] :OUTPUT ACCEPT [0:0] :RH-Firewall-1-INPUT - [0:0] -A INPUT -j RH-Firewall-1-INPUT -A FORWARD -j RH-Firewall-1-INPUT -A RH-Firewall-1-INPUT -i lo -j ACCEPT -A RH-Firewall-1-INPUT -p icmp --icmp-type any -j ACCEPT -A RH-Firewall-1-INPUT -p 50 -j ACCEPT -A RH-Firewall-1-INPUT -p 51 -j ACCEPT -A RH-Firewall-1-INPUT -p udp --dport 5353 -d <a href="http://224.0.0.251" target="_blank" onclick="return top.js.OpenExtLink(window,event,this)">224.0.0.251</a> -j ACCEPT -A RH-Firewall-1-INPUT -p udp -m udp --dport 631 -j ACCEPT -A RH-Firewall-1-INPUT -m state --state ESTABLISHED,RELATED -j ACCEPT -A RH-Firewall-1-INPUT -m state --state NEW -m tcp -p tcp --dport 80 -j ACCEPT -A RH-Firewall-1-INPUT -m state --state NEW -m tcp -p tcp --dport 443 -j ACCEPT -A RH-Firewall-1-INPUT -m state --state NEW -m tcp -p tcp --dport 21 -j ACCEPT -A RH-Firewall-1-INPUT -m state --state NEW -m tcp -p tcp --dport 22 -j ACCEPT -A RH-Firewall-1-INPUT -m state --state NEW -m tcp -p tcp --dport 23 -j ACCEPT -A RH-Firewall-1-INPUT -m state --state NEW -m tcp -p tcp --dport 25 -j ACCEPT -A RH-Firewall-1-INPUT -m state --state NEW -m tcp -p tcp --dport 110 -j ACCEPT -A RH-Firewall-1-INPUT -m state --state NEW -m tcp -p tcp --dport 143 -j ACCEPT -A RH-Firewall-1-INPUT -m state --state NEW -m tcp -p tcp --dport 5901 -j ACCEPT -A RH-Firewall-1-INPUT -j REJECT --reject-with icmp-host-prohibited COMMIT When I try to do nmap localhost it shows this : PORT STATE SERVICE 21/tcp open ftp 22/tcp open ssh 25/tcp open smtp 80/tcp open http 110/tcp open pop3 111/tcp open rpcbind 113/tcp open auth 143/tcp open imap 443/tcp open https 631/tcp open ipp 3306/tcp open mysql 5900/tcp open vnc 10000/tcp open snet-sensor-mgmt But when I try nmap <a href="http://65.103.191.30" target="_blank" onclick="return top.js.OpenExtLink(window,event,this)">65.103.191.30</a>, it shows this : (The 1658 ports scanned but not shown below are in state: closed) PORT STATE SERVICE 23/tcp open telnet 80/tcp open http</blockquote><div> The following is the maillog output : May 4 11:08:10 relate24seven sendmail[7908]: j44I89Gq007908: ruleset=check_rcpt, arg1=<<a href="mailto:janu@cs.unm.edu">janu@cs.unm.edu</a>>, relay=<a href="http://nhpsde.heritage.unm.edu">nhpsde.heritage.unm.edu</a> [<a href="http://64.106.114.26">64.106.114.26</a>], reject=550 5.7.1 <<a href="mailto:janu@cs.unm.edu">janu@cs.unm.edu</a>>... Relaying denied May 4 11:08:10 relate24seven sendmail[7908]: j44I89Gr007908: ruleset=check_rcpt, arg1=<<a href="mailto:josh@relate247.com">josh@relate247.com</a>>, relay=<a href="http://nhpsde.heritage.unm.edu">nhpsde.heritage.unm.edu</a> [<a href="http://64.106.114.26">64.106.114.26</a>], reject=550 5.7.1 <<a href="mailto:josh@relate247.com">josh@relate247.com</a>>... Relaying denied </div> <blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;"> Any help with this? </blockquote></div>