Hi Dave, I understand that, but because we can’t “set” the policy of the companies that employee our subscribers, we need to be able to work with as many email providers as possible, which means being VERY strict. There are two ways to achieve that, I think: 1) Using a comprehensive set of DNS-BL http://www.dnsbl.info/dnsbl-database-check.php 2) Not using any DNS-BL but then we need to clear the original headers before re-sending the email to the IETF exploders. Regards, Jordi -----Mensaje original----- De: Dave Crocker <dhc@xxxxxxxxxxxx> Organización: Brandenburg InternetWorking Responder a: <dcrocker@xxxxxxxx> Fecha: jueves, 22 de octubre de 2015, 21:19 Para: Jordi Palet Martinez <jordi.palet@xxxxxxxxxxxxxx> CC: <ietf@xxxxxxxx> Asunto: Re: DMARC stuff >On 10/22/2015 12:41 PM, JORDI PALET MARTINEZ wrote: >> 1) IETF is accepting messages from subscribers with MX which are Blacklisted. > > >There are many blacklists. Some are well run. Some less so. > >I'll suggest that any effort that goes down the path of providing >abuse-related directions to IETF ops staff needs to develop a detailed >policy specification -- including citing the abuse information lists to >be consulted -- that there can be review and consensus on exactly what >is to be done. > >d/ > >-- >Dave Crocker >Brandenburg InternetWorking >bbiw.net >