Dear piler-users,
I've been using tcp_wrappers for limiting network access to several
daemons,
and piler-smtp also supports it.
Unfortunately the redhat/centos distros have dropped tcp_wrappers
support
starting with version 8, and in some cases there might be a better way
to
do the job.
If you used postfix, then you might be familiar with postscreen, a nice
tool
to block spammers on the smtp level. It also supports a cidr block based
access list that has inspired me to implement it for piler.
So piler starting with version 1.3.10 supports a similar concept, and
has
dropped support for tcp_wrappers.
Note that 1.3.10 hasn't been released yet, give me a few days for that,
however the master branch is pretty close, and it already has this
feature.
I've created a wiki page describing the feature in more details with
examples:
https://www.mailpiler.org/wiki/current:smtp-acl-list
Note that it's an optional feature, it's your call whether you want or
need it,
there might be other ways to restrict smtp access to the archive, eg.
host based
iptables rules, a network based firewalls.
As always I appreciate your feedback. Also since it's almost the end of
the year
I'd like to gather your ideas how to improve piler.
I wish all of you a happy new year!
Janos
