> Reverse DNS names can be forged very easily. > All a spammer needs to do is add a PTR record for their IP like > hello.example.net. and suddenly all their mail will bypass your > greylisting. But we can do the back-resolve the received DNS name to IP and if they are equal, bypass greylisting. For example: $ host 217.69.129.105 105.129.69.217.in-addr.arpa domain name pointer f64.mail.ru. $ host f64.mail.ru f64.mail.ru has address 217.69.129.105
Spammers will can't bypass this check, isn't so? > % is also not something supported anywhere in v2 ? No, % is from v1 version, I add them like the example how to mask domain names. -- Best regards, Alexey Murz Korepov. Email, Jabber: [email protected] _______________________________________________ Users mailing list [email protected] http://lists.policyd.org/mailman/listinfo/users
