Open relay from localhost and other questions

[Dominic Raferd]

On 22 April 2017 at 00:00, Benny Pedersen <me at junc.eu> wrote:

> Robert Moskowitz skrev den 2017-04-21 21:16:
>
> Been doing some research.  mynetworks should stop the localhost from
>> seeming like an Open relay.  I don't have this problem on my old
>> production server.  I am researching it.
>
>
If mynetworks is undefined then it takes its value according to
mynetworks_style and the default for this setting changed for Postfix 3.0 -
see http://www.postfix.org/postconf.5.html#mynetworks_style. Perhaps this
could explain the difference you are seeing.

However external authenticated senders are not local (and I don't trust any
non-authenticated senders outside the host) so in such a case the message
from amavis is correct ('Nonlocal recips but not originating') while the
warning ('Open relay?') is unnecessary.
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