On Wed, 2016-12-28 at 15:44 -0800, Gordon Messmer wrote:
> On 12/28/2016 02:07 PM, Lindsay Haisley wrote:
> > This generally removes any dependency on DNS for resolving
> "localhost".
> 
> Courier uses DNS for everything that comes to mind.  Modifying 
> /etc/hosts won't resolve the problem in question.

True.

Another problem which I've had on occasion, although it doesn't sound
as if this is Viktor's problem, is with firewall configuration. If the
default INPUT policy is DROP, and localhost and there's no firewall
rule allowing it, then localhost traffic will be blocked.

This more or less applies to Linux, although any OS with configurable
kernel-based firewall rules will probably have similar properties.

Viktor, when this happens, does "ifconfig" show an existing localhost
interface, "lo" or "lo0"?

-- 
Lindsay Haisley       | "UNIX is user-friendly, it just
FMP Computer Services |       chooses its friends."
512-259-1190          |          -- Andreas Bogk
http://www.fmp.com    |


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