On 2016-10-01, Brian <a...@cityscape.co.uk> wrote: > On Sat 01 Oct 2016 at 17:25:46 +0100, Liam O'Toole wrote: > >> On 2016-10-01, mo <mo...@gmx.net> wrote: >> > First of all: >> > Thank you Liam for your help! :) >> > Thanks for the very nice and long explanation Mark! :) >> > >> > I think i should elaborate a little more on my setup.. i guess i did not >> > make that very clear in the first place, sorry about that. >> > >> > My network is consisting of the following systems: >> > >> > Main PC - 192.168.23.11 (Running Debian Jessie) >> > Server - 192.168.23.200 (Running Debian Jessie) >> > >> > The server is always online, the PC is only half of the day on. >> > >> > What i want to do now is the following: >> > >> > Sending mail from my Main PC to my Server and also the other way around, >> > from the Server to my Main PC. >> > The Server should also be able to send mail to the "outside" (Meaning to >> > other SMTP servers). >> > The second requirement is optional since i dont own a domain and all >> > this is sitting locally at my home. The most important thing for me is >> > to send and receive mail from both systems in my home network. >> > I hope this made my problem a little clearer :) >> > >> > I'm a little ashamed to say that, but i could not totally follow your >> > explanations Mark... I'm quite a newbie when it comes to SMTP.. sorry :( >> > >> > Thanks again for all your help ;) >> > >> > Greets >> > >> > mo >> > >> > >> >> I should have been a little clearer myself. You don't need to register a >> domain name. Just invent your own domain name for local purposes. Let's >> say you choose the domain name "monet", and that you have already given >> the hostnames "desktop" and "server" to your two machines. Then you >> would edit the file /etc/hosts on both machines to contain the following >> lines: >> >> 192.168.23.11 desktop.monet desktop >> 192.168.23.200 server.monet server > > I did that on gnome and desktop with appropriate changes: > > 192.168.7.20 desktop.monet desktop > 192.168.7.67 gnome.monet gnome > >> Now you only need to tell exim4 on the server that it is the final >> destination for emails to *.monet, again using the debconf wizard. You >> will then be able to send emails to local addresses, while emails to all >> other domains will go through your ISP's smarthost. > > I did that on gnome and desktop. > >> Incidently, you can also tell exim4 on the desktop to use the server as >> its smarthost. >> >> I realise that you're getting lots of (sometimes contradictory) >> information from various sources. The barebones configuration I have >> described above has served me well for several years. > > All commands are issued from gnome. > > brian@gnome:~# ping -c3 desktop > PING desktop.monet (192.168.7.20) 56(84) bytes of data. > 64 bytes from desktop.monet (192.168.7.20): icmp_seq=1 ttl=64 time=0.267 ms > 64 bytes from desktop.monet (192.168.7.20): icmp_seq=2 ttl=64 time=0.255 ms > 64 bytes from desktop.monet (192.168.7.20): icmp_seq=3 ttl=64 time=0.269 ms > > --- desktop.monet ping statistics --- > 3 packets transmitted, 3 received, 0% packet loss, time 2001ms > rtt min/avg/max/mdev = 0.255/0.263/0.269/0.019 ms > > brian@gnome:~# ping -c3 desktop.monet > PING desktop.monet (192.168.7.20) 56(84) bytes of data. > 64 bytes from desktop.monet (192.168.7.20): icmp_seq=1 ttl=64 time=0.264 ms > 64 bytes from desktop.monet (192.168.7.20): icmp_seq=2 ttl=64 time=0.255 ms > 64 bytes from desktop.monet (192.168.7.20): icmp_seq=3 ttl=64 time=0.255 ms > > --- desktop.monet ping statistics --- > 3 packets transmitted, 3 received, 0% packet loss, time 2002ms > rtt min/avg/max/mdev = 0.255/0.258/0.264/0.004 ms > > We expect that result because ping uses files in /etc/nsswitch. > > root@gnome:~# exim -bt brian@desktop > R: dnslookup for brian@desktop > brian@desktop is undeliverable: Unrouteable address > > root@gnome:~# exim -bt brian@desktop.monet > R: dnslookup for brian@desktop.monet > brian@desktop.monet is undeliverable: Unrouteable address > > Am I the only one who gets this? No capability to deliver mail to > desktop. What am I doing wrong? >
exim seems to be trying to resolve desktop.monet via DNS, thus ignoring /etc/nsswitch. (I have no idea whether that is the default behaviour.) Do you have a local DNS capable of resolving the address? You might try the mail command from the mailutils or bsd-mailx packages for comparison. -- Liam
