Auteur: Ian Eiloart Datum: Aan: Steve Hill, Adam Funk CC: exim-users Onderwerp: Re: [exim] Re: bounce messages and their potential misuse
--On 30 March 2006 17:18:21 +0100 Steve Hill <steve@???> wrote:
> On Thu, 30 Mar 2006, Adam Funk wrote:
>
>> I'm thinking of MTA(n-1) as a department's outgoinggmailhub or ISP's
>> smarthost. It's usually configured to accept anything from within the
>> IP range it's supposed to cover, and use DNS MX to pick MTA(n) for
>> non-local recipients.
>
> It's also worth considering open relays - if you're receiving messages
> from an open relay it may be a Bad Thing to reject them since the open
> relay may well generate a bounce to the (spoofed) sender in response to
> the rejection. (Open relays are, by definition, incorrectly configured).
Yes, but you aren't responsible for that. If you generate the bounce, then
you're responsible for collateral spam. If the open relay generates
collateral spam, then they're responsible.
