Stefan Kaltenbrunner <stefan@kaltenbrunner.cc> writes:
> On 12/04/2017 03:42 PM, Tom Lane wrote:
>> I think a bounce would be fine if the bounce message contained something
>> like "this list is inactive, please send to <xxx@lists.postgresql.org>
>> instead". How feasible is that?
> doable - but the challenge there is that if we want to generate a proper
> bounce we will have to accept the mail and send back a bounce - that
> however makes us vulnerable to bounce blow-back (if say somebody fakes a
> an email sender and we direct the bounce in that direction back).
Yeah, probably not great.
> The other option is to reject the RCPT TO at SMTP time with a message
> like the above on our frontends - the problem there is that is it up the
> sending MTA to wrap that text into a bounce that might or might not be
> parsable by a human :/
Seems to me that that's an OK compromise. If people are using MTAs that
fail to expose the rejection message, that's their problem not ours.
regards, tom lane
