noel jones ubdarhmeganvbhcsorg leonardo rodrigues magalhães wrote noel jones escreveu leonardo rodrigues magalhães wrote question something acchieving bandwidth saving purposes well attachment blocking something postfix blocking stopping message transmission client starts sending data valid mechanism interrupt client tell reject limitation smtp protocol would glad accept workaround even would represent smtp protocol violations im receiving lots email places permanently block hotmailgmail servers example customers thats eating expensive bandwidth workaround broken connection data interpreted transmission error mail retried increasing bandwidth usage possibility break connection reject envelope sender next delivery attempt cant inside postfix also guarantee next attempt sender address message objectionable content noel jones thu 07 aug 2008 140725 0600 attachment blocking body_checks