Re: SRS/SPF Help Needed

On Mon, 10 Jul 2006, Andy Shellam wrote:

<< >>
> Surely though, that's the idea behind SRS, is that it rewrites messages that 
> are sent through a forwarding service to have come from the forwarding 
> service - in my situation, mailnetwork.co.uk is technically a forwarding 
> service for andycc.net (and in the previous example, external.com). 
> Therefore SRS on exchange.mailnetwork.co.uk would need to rewrite messages 
> from andycc.net to appear to have come from mailnetwork.co.uk - so if a 
> bounce is returned, it gets returned through mailnetwork.co.uk, and 
> subsequently translated back to andycc.net?

Yes, I think I misapprehended your earlier scenario. If mailnetwork.co.uk 
is acting as a forwarding service, then I believe your usage of SRS there 
would be correct for "external.com".

> Damn this takes some head-scratching!!

I'll second that; there isn't much simple about SPF/SRS but it's wonderful 
technology.

-- 
Robert Muchnick
Xenterra.net
720-276-7917