Re: [exim] Re: bounce messages and their potential misuse

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Author: Steve Hill
Date:  
To: Adam Funk
CC: exim-users
Subject: Re: [exim] Re: bounce messages and their potential misuse
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).

--

  - Steve
    xmpp:steve@???   sip:steve@???   http://www.nexusuk.org/


      Servatis a periculum, servatis a maleficum - Whisper, Evanescence