Am 07.10.2013 20:30, schrieb Erwan David: > Le 07/10/2013 20:24, li...@rhsoft.net a écrit : >> >> Am 07.10.2013 19:42, schrieb Erwan David: >>> That's a matter of policy, if you cannot afford to loose legitimate >>> email, you may. >> show me one legitimate mail server in 2013 without a PTR >> >> as server-admin you need to RTFM and anybody which is connecting >> a mailserver to the internet not having a PTR or coming with >> the lousy excuse "my ISP doe snot support" instead switch to >> a sane ISP did not RTFM and has to accept that others do not >> accept messages from him - the is no "if" and no "but" > > You may also completely stop accepting email, thus you will have no spam > at all. For me it is more important not to loose legitimate email. > You may have a different opinion. > > But it is false to say tjat a mail server without reverse surely is a > spammer. > > Spammers can afford reverse
it is very likely that it is a spammer or at least not any important mail if someone has important mail to send he will learn the hard way that all the "best practices" are there for a reason - hence he get a clear reject message and if someone refuses to fix it's setup which is done within seconds -> his problem for every rejected legit mail from a badly configured server missing a PTR you block 1000000 spam mails i even go so far if someone complains that his messages are rejected because a missing PTR i recommend to fire his admin and in doubt the PTR has to match the A-record
