sendmail not working for relaying messages

[Janu Sundaram]

> 
> Hello,
> 
> I am trying to setup Outlook Express (email client to setup mail accounts) 
> , when I try to send mails outside my domain like @mydomain.com<http://mydomain.com>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 'janu at cs.unm.edu'. Subject 
> 'test', Account:'mail.relate24seven.com <http://mail.relate24seven.com><
> http://mail.relate24seven.com>> ',> Server: '65.103.191.30<http://65.103.191.30><
> http://65.103.191.30>', Protocol: SMTP, Server> Response: '550 5.7.1> <
> janu at cs.unm.edu>... Relaying denied', Port: 25, Secure(SSL): No,> Server 
> Error: 550, Error Number: 0x800CCC79.


When I use pine on the server , I can send mails to everyone and recieve 
from everyone.

> I can send mails to @relate24seven.com <http://relate24seven.com> 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 224.0.0.251<http://224.0.0.251>-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 65.103.191.30 <http://65.103.191.30>, 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



The following is the maillog output :
May 4 11:08:10 relate24seven sendmail[7908]: j44I89Gq007908: 
ruleset=check_rcpt, arg1=<janu at cs.unm.edu>,
relay=nhpsde.heritage.unm.edu<http://nhpsde.heritage.unm.edu>[
64.106.114.26 <http://64.106.114.26>], reject=550 5.7.1 <janu at cs.unm.edu>... 
Relaying denied

May 4 11:08:10 relate24seven sendmail[7908]: j44I89Gr007908: 
ruleset=check_rcpt, arg1=<josh at relate247.com>,
relay=nhpsde.heritage.unm.edu<http://nhpsde.heritage.unm.edu>[
64.106.114.26 <http://64.106.114.26>], reject=550 5.7.1 <josh at relate247.com>... 
Relaying denied


Any help with this?
> 
> 
>
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