OpenSUSE Network :: SMTP - No Route To Host
Jan 3, 2010
OpenSUSE version: 11.2 *and* 10.0 I am unable to send email. It appears I am being blocked by my ISP [URL]... A Wireshark trace shows ICMP type 3 Code 13 - "Administratively filtered". It's important to note that I don't know exactly when the problem started, because I seldom use my ISP email account, I use Yahoo web mail due to the "throwaway" nature if I get hit with spam. I only discovered the problem when testing the functionality of 11.2. I suspect the problem started several months ago: I restored openSUSE 10.0 and the problem exists there too. I wish I'd sent that last email via 10.0 before the upgrade.
The weird thing is that using Windows 2000 box I can get a successful connection using telnet (Telnet also fails on the openSUSE box.) It appears to me there is something in the Linux TCP stack that Teksavvy doesn't like. I am on dial up and I pointed this out to Teksavvy tech support, as I am probably the only person left on dialup and the reason no one else has reported the problem
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Aug 30, 2010
today I tried to configure a network route to a host for testing my network interface. Code: route add 192.168.1.15 eth0 As I have to eth interfaces and both interface got their IP from DHCP (192.168.1.11 and 192.168.1.12) and are in the same subnet, I shut the other interface down:
Code: ifconfig eth1 down Then I tried to test the interface by doing a ping to 192.168.1.15.
Problem: When I unplug the cable from eth0 (and eth1 is still plugged) the ping still works. Somehow my linux (it's debian) powers up again eth0 and pings over this port.
How can I stop my linux doing this. I just want to have the route added only on the one interface - not the other. Is it maybe some case of a default-gateway?
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Apr 12, 2011
Yesterday I installed a RaLink RT2800 802.11n PCI on my squeeze system. Now I have a connection to Internet but I can not connect other systems in my home network. An ssh-try to a system in my home network results in: ssh: connect to host xxx.xxx.xxx.xxx port 22: No route to host If I use my eth0, I do not have connection to Internet, but I can connect other systems in my home network.
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Mar 9, 2011
I'm trying to ssh from my laptop to my desktop (both fedora 14) over a local network. I can ping my desktop and get responses, but if I ssh to it, I receive
ssh: connect to host 192.168.100.xxx port 22: No route to host
I can ssh from the desktop to itself.
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Nov 13, 2010
I have a server set up with a VPN (openVPN with DynDNS). My emails are located there and I can check them from home, office, where ever really, with different computers, no problem.However, due to restrictions of some ISPs I would have to change the SMTP server used, depending on where I am with my laptop.
Now, I thought about using the VPN to also tunnel the SMTP traffic through that. But how am I doing that?So far, when I'm connected to via VPN I simply have a local (from the server point of view) IP address to connect to my IMAP server. But how can I route the SMTP port 25 through the VPN?Is that possible to do, also in a way that I don't have to change anything depending on where I am, as in within the network of the server or outside? Since when I'm within the network the VPN obviously isn't connecting..
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Mar 27, 2011
I often see hundreds of entries like this in my logwatch report:
[code]...
I am wondering if this would be correct?
[code]...
will it keep that marauder away from Dovecot?
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Dec 5, 2009
I've been seeing a bunch of issues with the /etc/resolv.conf not picking up the nameservers for 3g connections, and managed to fix that issue using tips found here.. the one thing I m having a problwm with is my 3G USB modem not picking up a default route/gateway. I can connect using KNetworkManager, get an IP and nameservers, but.
[Code]..
And to top it all off, I cannot figure out what the default gateway should be from verizon to just write a script out myself that'll do it automatically.
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Aug 19, 2010
Ok here's my setup :
SuSE 10.0 X86 32 acting as my internet gateway and firewall.
eth0 is my internal interface network 192.168.0.0/24 IP 192.168.0.254 dsl0 is my internet connection and is a single ip PtP connection to my ISP.
My internal network is masquaraded onto the external network.
I run an smtp server on my gateway box that I need to be accessable to both the internal and external networks.
However I want to prevent machines on the internal network from establishing connections to external smtp servers, but still alow them to connect to the smtp server on the gateway to send email.
NOTE I do not want to force attempts to connect to [URL] 25 to be re-directed to my internal server I just want to drop or reject the connection.
The firewall up until now has just been configured through YaST, but am not afraid to edit script files if needed
The reason for doing this it to prevent spambots from being able to send through my isp, I keep my own machines clean but sometimes get asked to disinfect machines for other people (family members etc), where I need to connect to the outside world to get updates/virus defs etc, but don't want them spamming from my network.
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May 22, 2011
It seems I can't access smpt servers both from kmail and php. Kmail says
Code:
Sending failed:
smtp.gmail.com
The message will stay in the 'outbox' folder until you either fix the problem (e.g. a broken address) or remove the message from the 'outbox' folder.The following transport was used: ... I double checked my settings and they are correct. I can ping smtp.gmail.com. I can send emails using thunderbird on a windows box that is connected to the same network as I am.I also tried turning off the firewall through yast but no joy.
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Jan 14, 2010
I have a static ip on my wired (eth0) connection. I thought I had it well set up in yast. In the routing section I do have my default gw coming up there, with the the right nw i/f (eth0) associate with it. However, when I boot up, y config seems to ignore that fact, and I have to keep goign to root and typing "route add default gw <mygwip>" each time, which is something I want to avoid. Isn't it odd that the route settings created by yast have no effect? If they did, the route would be set up on bootup and I would haven't to do that typing.
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Jul 11, 2010
I'm currently struggling with the following problem: Connecting to a wired network with NetworkManager (0.7.1) is no problem at all: Everything is set up automatically, including the default route:
[Code]....
When I now add the route manually it works. But as soon as the cable is plugged in, the NetworkManager overwrites the routing table entry again (which makes it quite annoying). Does anyone know a way to avoid this behaviour?
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Sep 29, 2010
I'd like to use the mail command to send e-mails with some log files. Is there a way to configure the SMTP server from cli or to write the IP address into a file?
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Jul 10, 2011
I reinstalled OpenSuSE because my hard drive filled up and i couldn't find what was taking up 30 GB of disk space. My SMTP and IMAP were working fine. Now, I can't telnet into smtp remotely and they no longer respond to my mail program.One last detail, I can send out mail to example, gmail.I can receive the mail at gmail but i can't send mail back because the imap and pop3 don't work.
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Jan 25, 2010
I can connect my laptop via the ethernet cable, and get an IP, Subnet mask, and a route. But if I connect via Wireless, I get an IP and Subnet mask.
More interesting, my Internet Tablet grabs the route via wireless with out issues.
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Aug 21, 2009
I use linux.
I have below error, no route to host.
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Sep 25, 2009
Code:
Code:
Code:
Code:
Code:
Why can I not reach 192.168.1.1 ?
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Jan 15, 2010
I have two machines: A.domain.com: (Old mail server): Red Hat 9 (Linux 2.4.20-30.9) B.domain.com: (New mail server): RHEL Client 5 (2.6.18-164.2.1.el5) (Both machines are in the same subnet and on the same switch). I wanted to test the new mail server by sending an E-mail message to it from the old one, but the maillog says
[code]...
I can ping from A.domain.com to B.domain.com and from B.domain.com to A.domain.com . I can traceroute -p 25 from A.domain.com to B.domain.com and from B.domain.com to A.domain.com. I can *telnet* on port 25 from B.domain.com to A.domain.com. BUT when I telnet on port 25 from A.domain.com to B.domain.com. I get "telnet: connect to address x.x.x.x: No route to host". The resolved IP x.x.x.x is correct by the way. So I see no reason why. it should fail to telnet on port 25 to A.domain.com.
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Aug 9, 2011
On my opensuse 11.4 box (although I assume the version is irrelevant), I'm trying to figure out how to do something with the mail command. We have multiple smtp relay servers and sometimes I have to test to verify that mail is bouncing off of them successfully. On my laptop, in my main.cf file for postfix, I've got the relay server listed. But to test multiple servers, I have to change the main.cf, restart postfix, send message, and then repeat for each test.
I'm trying to figure out a way to specify the smtp relay on the command line. I've been playing with the -S option which is supposed to allow variables and one of the variables in the man page is 'smtp'. I've tried several different syntaxes but nothing seems to work.
The closest I've come is:
mail -S smtp 10.1.0.63 -s "test" user@email.com < main.cf
That syntax doesn't give me an error but it still routes the message off the smtp server listed in main.cf which is not 10.1.0.63.
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Aug 18, 2010
In 11.3, if in "/etc/sysconfig/network/ifcfg-eth0" i set DHCLIENT_SET_DEFAULT_ROUTE="no" this seems to have no effect. If i start my box, the routing table has the "default route"-entry offered by a remote DHCP-Server. More Info: My Susebox has eth0 and eth1 and both network devices should use DHCP4. But from DHCP-offer on eth0 i want to use
* "offered IP-Adress for eth0"
* "offered NTP-Server"
* "offered Host-Name"
From DHCP-offer on the eth1 i want to use
* "offered IP-Adress for eth1"
* "offered DNS-Servers"
* "offered Default Route"
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Jan 8, 2011
I am using fedora 14..i wanna create webservice in fedora 14...i am able to create sevice in server machine...but the client not able to get service from the server.it shows an error an i/o error has occured.no route to host.....we checked the ip address and port...i am able to ping the server...its connecting ...but it shows this error...?
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Apr 11, 2010
I have 3 computers on a local home network. Computer 1 is not receiving incoming anything from other computers on the network, and I don't know why. The regular internet works fine.
Computer 1 can ping and ssh into either 2 or 3. 2 can ping and ssh into 3 and vice versa. But nothing can ping OR ssh into 1. Trying to do so says "no route to host".
All computers are running Ubuntu Karmic.
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May 9, 2011
I have a server that I can ping, and I can connect remotely with ssh to it. But when I try to connect to apache (port 80) I get "no route to host". But I can connect to localhost It's not just my client system that is having this problem but also systems that are on the same subnet There is no firewall running on the server route on the server
[Code]...
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Feb 22, 2011
We have a Red Hat Linux server that sends email out daily. It points to and Exchange server for smtp. It works fine, however, at least once a day, an email will fail and in the maillog I see "No route to host". After a few minutes, everything is working fine. The Linux server and Exchange are on the same VLAN and IP subnet.
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Feb 14, 2010
I have two system, an Intel Core2 Duo system running the 32-bit version of Fedora 12, and a MacBook Pro running the 64-bit version of Fedora 12. I'm using the Gnome desktop on each system. I have enabled all the services I believe are necessary to support NFS including nfs, rpcbind, rpcgssd, rpcidmapd, and rpcsvcgssd on each system. I have added an entry to my /etc/exports file to export my home on each system, and if I type this command:
$ showmount -e localhost
I get a result like this:
Export list for localhost:
/home/tron 192.168.200.101,192.168.200.100
However when I issue this type of command:
$ showmount -e <remote host name>
I get this kind of result: rpc mount export: RPC: Unable to receive; errno = No route to host Research on the Internet indicates this is usually due to a firewall problem. However, I use the Firewall Configuration application to the disable the firewall on both systems, and I continue to get the same result. What is needed so I can get this two machines to display their exported file shares remotely? It turns out I did not disable the firewall when I thought I had. Now that I'm certain the firewall is disabled on both systems, I'm able to get the showmount command to succeed.
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Aug 10, 2010
I setup my old laptop for my mom with F13 and have sshd running. My dad set up their DD-WRT router so that it's forwarding port 22 to the laptop's ip address. Yet, I get "No route to host" when I try and ssh in from my house. Is there anything that would be preventing F13 from accepting the SSH connection?
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Apr 11, 2010
I have 3 computers on a local home network. Computer 1 is not receiving incoming anything from other computers on the network, and I don't know why. The regular internet works fine. Computer 1 can ping and ssh into either 2 or 3. 2 can ping and ssh into 3 and vice versa. But nothing can ping OR ssh into 1. Trying to do so says "no route to host". All computers are running Ubuntu Karmic. I don't even know where to start figuring out what's causing this, but it's probably something simple. I'm using the IPs I found listed in my wireless router's web-based control panel.
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Jan 5, 2010
I used ssh to log into my sever that I had and I from there I ran the command dhclient eth by mistake on the server but the serve had an static IP address. Unfortunately I can't ssh back into the server anymore! It replies back with No route not host. Now my questions are. First of all how do I change it back into the previous setting? Secondly, can I do this remotely since the server is in another place and I don't have access to it right now or do I have to go there and sit behind it and play around with it there?
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Apr 22, 2010
so on the host i'm trying to connect to, i have installed ssh server and it was working fine until i changed the /etc/network/interfaces file to set a static IP and then ran Code: sudo /etc/init.d/networking restart but now when i try to connect with SSH using the new static IP i get Code: ssh: connect to host 192.168.2.10 port 22: No route to host
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Apr 3, 2010
I am using Fedora-10 on 64-bit quad-core xeon processors. I ran ssh-keygen and established passwordless connection between host-client and created a host file named lamhosts as follows:
172.16.122.11 cpu=4
172.16.122.21 cpu=4
where 11 is the host server and 21 is one of the nodes. When I executed 'lamboot -v lamhosts', it failed to boot nodes ssi:boot:base:linear: Failed to boot n1 (172.16.122.21). By googling, I found the error but couldn't yet find a solution.
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Feb 13, 2010
I have two system, an Intel Core2 Duo system running the 32-bit version of Fedora 12, and a MacBook Pro running the 64-bit version of Fedora 12.
I'm using the Gnome desktop on each system. I have enabled all the services I believe are necessary to support NFS including nfs, rpcbind, rpcgssd, rpcidmapd, and rpcsvcgssd on each system.
I have added an entry to my /etc/exports file to export my home on each system, and if I type this command:
$ showmount -e localhost
I get a result like this: Export list for localhost: /home/tron 192.168.200.101,192.168.200.100
However when I issue this type of command: $ showmount -e <remote host name>
I get this kind of result: rpc mount export: RPC: Unable to receive; errno = No route to host
Research on the Internet indicates this is usually due to a firewall problem. However, I use the Firewall Configuration application to the disable the firewall on both systems, and I continue to get the same result.
What is needed so I can get this two machines to display their exported file shares remotely?
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