Thanks for all the answers! They helped me quite a lot :)
Regards. Héctor Moreno Blanco -----Mensaje original----- De: owner-postfix-us...@postfix.org [mailto:owner-postfix-us...@postfix.org] En nombre de Reindl Harald Enviado el: jueves, 09 de mayo de 2013 14:27 Para: postfix-users@postfix.org Asunto: Re: Reject email Am 09.05.2013 14:14, schrieb Stan Hoeppner: > On 5/9/2013 5:28 AM, Reindl Harald wrote: >> >> Am 09.05.2013 12:24, schrieb Héctor Moreno Blanco: >>> I would like to reject an email if the MX does not exist. We have >>> enable the setting /reject_unknown_sender_domain/ and >>> /reject_unknown_recipient_domain/. However, if the domain has DNS >>> and resolves it, the message is sent, and we don't want that >> >> this is a completly broken idea > > Not completely broken. It's not really "no MX" that Hector is after, > but undeliverable sender addresses in snowshoe spam. "No MX" would > fall under this umbrella if you have a A-record for "example.com" and you incoming mail-server is on this IP you do not need any MX record and postfix will happily use the A-record to deliver mail another story is if there is a MX-Record but the listed hostname does not resolve and at least for me the intention of "if the MX does not exist" is not clear enough if it means a) no MX record for the domain b) a MX record with a non-resloving hostname reject b) would be fine reject a) would be stupid P Please consider the environment before printing this e-mail. ______________________ This message including any attachments may contain confidential information, according to our Information Security Management System, and intended solely for a specific individual to whom they are addressed. Any unauthorised copy, disclosure or distribution of this message is strictly forbidden. If you have received this transmission in error, please notify the sender immediately and delete it. ______________________ Este mensaje, y en su caso, cualquier fichero anexo al mismo, puede contener informacion clasificada por su emisor como confidencial en el marco de su Sistema de Gestion de Seguridad de la Informacion siendo para uso exclusivo del destinatario, quedando prohibida su divulgacion copia o distribucion a terceros sin la autorizacion expresa del remitente. Si Vd. ha recibido este mensaje erroneamente, se ruega lo notifique al remitente y proceda a su borrado. Gracias por su colaboracion. ______________________
