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  #1  
Old 5th March 2008, 16:01
seahawkja seahawkja is offline
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Default Cannot telnet localhost 110 to Fedora 8 Server from PCs on LAN

I used Falco's article : Fedora 8 Server Setup: LAMP, Email, DNS, FTP, ISPConfig (a.k.a. The Perfect Server) to setup a server for a client. Everything went well and works fine.

The server is online and behind a firewall/router with the neccessary ports open.

We can retrieve webmail and MUA mail from the internet, but trying to MUA (Eudora 7.1) from a windows xp pc on the internal LAN times out.

On the xp pc I tried telnet to localhost 110 and telnet 192.168.0.128 110 but it never connects. I can telnet on the server itself and it responds correctly.

I figure it has something to do with dovecot.conf but not sure as I have not used dovecot before.

Any ideas/suggestions appreciated.

seahawkja
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Old 5th March 2008, 17:04
topdog topdog is offline
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Quote:
Originally Posted by seahawkja
I used Falco's article : Fedora 8 Server Setup: LAMP, Email, DNS, FTP, ISPConfig (a.k.a. The Perfect Server) to setup a server for a client. Everything went well and works fine.

The server is online and behind a firewall/router with the neccessary ports open.

We can retrieve webmail and MUA mail from the internet, but trying to MUA (Eudora 7.1) from a windows xp pc on the internal LAN times out.

On the xp pc I tried telnet to localhost 110 and telnet 192.168.0.128 110 but it never connects. I can telnet on the server itself and it responds correctly.

I figure it has something to do with dovecot.conf but not sure as I have not used dovecot before.

Any ideas/suggestions appreciated.

seahawkja
You cannot telnet localhost 110 on the windows xp machine because localhost refers to the machine on which you are working. Are you able to ping the server from your xp client ? Please provide the output of

Code:
netstat -ntlp
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Old 5th March 2008, 17:32
seahawkja seahawkja is offline
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Default RE: Cannot telnet to email server on LAN

Thanks for the response.

I can ping the server no problem.

From the xp m/c telnet 192.168.0.128 110 times out waiting on connection.
I can telnet localhost 110 & telnet 192.168.0.128 110 on the server ok.

The setup of the mail is dovecot - postfix - amavisd - spamassassin & clamav - squirrelmail.

All of the above are working - just can't MUA inside LAN.

Results of netstat:

Active Internet connections (only servers)
Proto Recv-Q Send-Q Local Address Foreign Address State PID/Program name
tcp 0 0 0.0.0.0:993 0.0.0.0:* LISTEN 2217/dovecot
tcp 0 0 0.0.0.0:995 0.0.0.0:* LISTEN 2217/dovecot
tcp 0 0 127.0.0.1:10024 0.0.0.0:* LISTEN 2242/amavisd (maste
tcp 0 0 127.0.0.1:10025 0.0.0.0:* LISTEN 2298/master
tcp 0 0 0.0.0.0:3306 0.0.0.0:* LISTEN 2189/mysqld
tcp 0 0 0.0.0.0:110 0.0.0.0:* LISTEN 2217/dovecot
tcp 0 0 0.0.0.0:143 0.0.0.0:* LISTEN 2217/dovecot
tcp 0 0 0.0.0.0:111 0.0.0.0:* LISTEN 1873/rpcbind
tcp 0 0 192.168.0.128:80 0.0.0.0:* LISTEN 2309/httpd
tcp 0 0 0.0.0.0:57937 0.0.0.0:* LISTEN 1892/rpc.statd
tcp 0 0 0.0.0.0:21 0.0.0.0:* LISTEN 2103/vsftpd
tcp 0 0 127.0.0.1:631 0.0.0.0:* LISTEN 2432/cupsd
tcp 0 0 0.0.0.0:25 0.0.0.0:* LISTEN 2298/master
tcp 0 0 :::22 :::* LISTEN 2077/sshd
tcp 0 0 :::443 :::* LISTEN 2309/httpd
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Old 5th March 2008, 18:38
topdog topdog is offline
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Do you have antivirus running on the windows xp machine ? Some AV's are know to block port access redirecting everything to a proxy for scanning.

It's also possible that your desktop firewall could be blocking the outbound connection.

Also double check you iptables firewall on the server it self it could be accepting connections only from your router.
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Old 5th March 2008, 20:10
seahawkja seahawkja is offline
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Default RE: Cannot telnet

Thanks for your response.

Not on-site at present so I cannot check A/V or local firewall on xp m/c.

To the best of my knowlege the xp firewall is off but would need to check on the A/V (TrendMicro2007). Note: This xp m/c was using the same Eudora 7.1 to pickup mail previously from an off-site email server without any problems.

Output below for iptables -L

Chain INPUT (policy ACCEPT)
target prot opt source destination
RH-Firewall-1-INPUT all -- anywhere anywhere

Chain FORWARD (policy ACCEPT)
target prot opt source destination
REJECT all -- anywhere anywhere reject-with icmp-host-prohibited

Chain OUTPUT (policy ACCEPT)
target prot opt source destination

Chain RH-Firewall-1-INPUT (1 references)
target prot opt source destination
ACCEPT all -- anywhere anywhere
ACCEPT icmp -- anywhere anywhere icmp any
ACCEPT esp -- anywhere anywhere
ACCEPT ah -- anywhere anywhere
ACCEPT udp -- anywhere 224.0.0.251 udp dpt:mdns
ACCEPT udp -- anywhere anywhere udp dpt:ipp
ACCEPT tcp -- anywhere anywhere tcp dpt:ipp
ACCEPT all -- anywhere anywhere state RELATED,ESTABLISHED
ACCEPT tcp -- anywhere anywhere state NEW tcp dpt:ftp
ACCEPT tcp -- anywhere anywhere state NEW tcp dpt:smtp
ACCEPT tcp -- anywhere anywhere state NEW tcp dpt:ssh
ACCEPT udp -- anywhere anywhere state NEW udp dpt:netbios-ns
ACCEPT udp -- anywhere anywhere state NEW udp dpt:netbios-dgm
ACCEPT tcp -- anywhere anywhere state NEW tcp dpt:netbios-ssn
ACCEPT tcp -- anywhere anywhere state NEW tcp dpt:microsoft-ds
ACCEPT tcp -- anywhere anywhere state NEW tcp dpt:https
ACCEPT tcp -- anywhere anywhere state NEW tcp dpt:http
REJECT all -- anywhere anywhere reject-with icmp-host-prohibited
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Old 5th March 2008, 21:08
topdog topdog is offline
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Your iptables is not configured to allow port 110. Thats the problem
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