Re: introducing mopher, the mail gopher
- View SourceOn Fri, Jun 14, 2013 at 12:37:11PM +0200, Petar Bogdanovic wrote:
> On Fri, Jun 14, 2013 at 12:08:00PM +0200, Bastian Blank wrote:So it only supports what the milter server can do.
> > On Fri, Jun 14, 2013 at 08:50:42AM +0200, Manuel Badzong wrote:
> > > I would like to introduce mail gopher, a new all-in-one, MIT-licensed
> > > mail filter.
> > How does it relate to Postfix?
> It's a milter that some people on this list might find useful.
> > > Mopher can:A milter can't do that anyway, the communication is controlled by the
> > > + tarpit hosts
> > Bad idea in userspace.
> So kernel space then?
other side of the milter connection. You can wait a long time for each
response, but this does not get you anything.
> > > + count failed/successful delivery attempts by hostsYou need whitelisting for high volume senders, because they split stuff
> > What do you want to do with this information?
> Whitelisting based on the amount of successfully delivered mails is
> probably the best example.
over larger address ranges. Those also produce a high rejection rate
> > > + PSL (by Mozilla, see http://publicsuffix.org/)So you do greylisting based on DNS reverse lookups?
> > What is the use for this?
> It helps with domain-based greylisting. There are no simple rules when
> figuring out the registered part of a fqdn.
Extreme feminine beauty is always disturbing.
-- Spock, "The Cloud Minders", stardate 5818.4
- View SourceBastian Blank skrev den 2013-06-14 12:08:
>> + PSL (by Mozilla, see http://publicsuffix.org/)patch postfix to not accept mails with dns A/AAAA records, there is
> What is the use for this? This all is focused on web.
senders that put my email into body content will deliver it to my own
trashcan, so if you like to get reply, dont do it
- View SourceOn Fri, Jun 14, 2013 at 12:48:51PM +0200, Bastian Blank wrote:
> On Fri, Jun 14, 2013 at 12:37:11PM +0200, Petar Bogdanovic wrote:Mopher is a milter (or mail filter) and the original mail never
> > It's a milter that some people on this list might find useful.
> So it only supports what the milter server can do.
described it as being anything else than a milter (e.g. an MTA).
> > So kernel space then?It was a rhetorical question since I wasn't sure what you were saying.
> A milter can't do that anyway,
> > It helps with domain-based greylisting. There are no simple rules whenIn that particular case, mopher doesn't need to do any lookups but uses
> > figuring out the registered part of a fqdn.
> So you do greylisting based on DNS reverse lookups?
whatever libmilter provides as sender hostname (which, at least in case
of Postfix, should be a PTR RR that matches with the according A RR).
It then extracts the registered part with the help of the PSL rule-set.
The default greylisting is therefore based on the following triplet:
sender domain (the registered part), envelope from and recipient.