It's not only bandwidth saving. It's mainly the ability to react with = custom SMTP responses generated by a script on protocol level. It would also be = possible to add customized SMTP command processing etc ...
--Harald > -----Urspr=FCngliche Nachricht----- > Von: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] Im Auftrag von Davide Libenzi > Gesendet: Montag, 2. Februar 2004 02:01 > An: [EMAIL PROTECTED] > Betreff: [xmail] Re: SMTP Dialog Filter Hooks >=20 >=20 > On Sun, 1 Feb 2004, Harald Schneider wrote: >=20 > > Hi Davide, > >=20 > > is there a chance to see SMTP dialog filter hooks in the=20 > next release?=20 > > This would make the filtering engine more flexible: > >=20 > > You could check the RCPT_TO and act before the message is accepted.=20 > > E.g. checking a forwarding target server, if the user exists there,=20 > > before accepting and forwarding the whole mail. > >=20 > > Hooks after each SMTP command and after each data line=20 > would be a nice > > thing, e.g.: > >=20 > > HOOK_HELO > > HOOK_MAIL_FROM > > HOOK_RCPT_TO > > HOOK_DATALINE > >=20 > > So a script could also do anti spam and anti virus checking on the=20 > > fly, > > aborting conversation without accepting the whole message.=20 > >=20 > > What do you think? >=20 > I do not believe in online SPAM filtering. Because of a huge=20 > load on the=20 > server and because SPAM messages are typically very small.=20 > It's not that=20 > we are talking of 1-2MB messages, where cutting them at SMTP might be=20 > bandwidth saving. SPAM messages are typically < 10Kb, and=20 > from the time=20 > you cut them, network layers have already ack the data =3D=3D the=20 > bandwidth=20 > damage has already been done. >=20 >=20 >=20 >=20 > - Davide >=20 >=20 > - > To unsubscribe from this list: send the line "unsubscribe=20 > xmail" in the body of a message to [EMAIL PROTECTED] > For general help: send the line "help" in the body of a=20 > message to [EMAIL PROTECTED] >=20 - To unsubscribe from this list: send the line "unsubscribe xmail" in the body of a message to [EMAIL PROTECTED] For general help: send the line "help" in the body of a message to [EMAIL PROTECTED]
