On Wed, 15 Oct 2014 15:13:27 -0400 Miles Fidelman <mfidel...@meetinghouse.net> wrote:
> Tanstaafl wrote: > > My position is that: > > > > 1. email to invalid recipients should be rejected at the RCPT-TO > > stage, > > Easier said then done - at least when a server does relaying, but > clearly ideal when possible. > It's worth some effort, at the moment it is the single most effective anti-spam measure. If you outsource your mail, it's worth going to some trouble to find a hosting company who will hold and accept updates for a list of valid recipients. > > > > 2. under *no* circumstances should mail to invalid recipients be > > accepted for delivery then silently deleted based solely on that one > > criteria, Not on that alone, no, it could be a typo, in which case the sender needs to be informed. But if it is spam, there's nobody to tell, and you don't want to send a copy of the spam to the forged Reply-To: address. > > > > and > > > > 3. once an email has been accepted for final delivery, every effort > > should be taken to deliver the message to the recipient, whether to > > their Inbox clean or tagged as spam (if a spam threshhold is met), > > or to a spam quarantine, Which shouldn't be a problem if there's a valid recipient. > > > > I allow for the very rare 'clear-and-present-danger' exceptional > > circumstance that, if an after-queue content scanner determines > > with a very high probability that something contains a malicious > > payload, an admin might want to not deliver it to the recipient. > > But, I would also argue that it should go into a quarantine that > > only the admin has access to, and never just silently deleted. > > Yes, and a log kept. *And* the postmaster address monitored, and a request to know the disposition of a vanished email should be answered, along with the reason. Especially if the request is accompanied by one of your message IDs... > > But, as Jerry says, that is just my opinion... Indeed. Within his domain, the email admin is king... > > > > Generally agree with you in principle. And that's certainly the > standards-compliant policy. > > In practice.... I support a few dozen mailing lists - operational > necessity dictates dropping a lot of stuff silently. Of course. Already-accepted spam *must* be silently dropped. -- Joe -- To UNSUBSCRIBE, email to debian-user-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org Archive: https://lists.debian.org/20141015215812.021c2...@jresid.jretrading.com