nethserver-unbonund¶
Unbound is a validating, recursive, and caching DNS resolver. Currently it’s only used only as DNS server for anti-spam DNSBL implementation.
When a new mail arrives, the anti-spam filter checks if sender IP address is listed in well-known blacklists. Some blacklists doesn’t allow multiple query from public DNS servers, thus the system needs a DNS server which can directly query the blacklist DNS.
If the mail filter is installed, dnsmasq configuration is changed, and specific
domain query are redirect trough unbond.
See: /etc/e-smith/templates/etc/dnsmasq.conf/26unbound_rbl
.
Package: nethserver-unbound.
Database¶
Configuration is saved in unbound
key inside configuration
database.
Available properties:
UDDPort
: server address of the mail server, default islocalhost
access
: default isnone
since unbound should not be used as a normal DNS serverstatus
: can beenabled
ordisabled
, default isenabled
Example:
unbound=service
UDPPort=10053
access=none
status=enabled
Configuration can be applied using the nethserver-unbound-update
event.