Mailinglist Archive: opensuse (880 mails)

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Re: [opensuse] Is it possible to send email with postfix without DNS?
Carlos E. R. said the following on 08/31/2013 02:01 PM:
I want to send email from one local computer to another one, without
setting up DNS, but it fails:

It is likely to depend on how yo have, say, postfix set up, rather than how you have other things set up.

Look at 'relayhost' in the Postfix config.

As for the DNS server ...

In the Microsoft world yes you would have a small machine as a DNS server, and another as a DHCP server and another ...

All of which is why, since so many of these things need only a very low powered machine or might consume a very small percentage ff the power of a 4-negations back desktop (such as the ones I pull out of the Closet of Anxieties), stacking virtual Microsoft machines as virtual instances on a modern machine makes sense.

But in the *NIX world it doesn't.
Right now my DNS server is also my email server (postfix), runs fetchmail, spamassassin and dovecot as well as is the NFS /home and ~/ebooks and ~/Downloads and ~/Documents and ~/Media and ~/Development for when I connect via laptop or a remote workstation.

Its a 800MHz single core ex-desktop from almost a decade ago with 1G of memory. That's right now, but it has run on half that with no problems.

I connect via ssh or via a VNC link.
I've never seen the load average go over 1.0 except for booting subsystems all at the same time. Most of the time its under 0.3.
Right now it under 0.05


I'm sure Postfix can be made to work with only ITS OWN /etc/hosts file, but you will have to configure postfix for that. Personally I use the [relayhost] configuration setting when I route outgoing via Postfix and have my ISP do the hard work.

--
How long did the whining go on when KDE2 went on KDE3?

The only universal constant is change. If a species can not adapt it
goes extinct. That's the law of the universe, adapt or die.
-- Billie Walsh, May 18 2013
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