On Thu, 8 May 2008 12:39:41 +0200 Warren Baker <[EMAIL PROTECTED]> wrote:

> On 07/05/2008, Grant Peel <[EMAIL PROTECTED]> wrote:
> >
> >
> > I have recently implimented greylist on some of our servers, and am seeing
> > a
> > few domain, that return multiple IP address. How is that handled.
> >
> > I am also seeing a few (like telus.net) that resend mail from a different
> > mail server than the original. How do we handle that?
> >
> > I have my accept time set to 2 minutes. Does anyone think thats too long?
> 
> 
> 
> GMail uses multiple fallback servers, as an example [a-z]proxy.gmail.com so
> you will see mail not been delivered from their servers if greylisting is
> enabled. As Heiko has mentioned he uses just the sender and recipient
> address as the condition. What you can also do is just add the /24 network
> for the connecting host into your condition instead of the hosts sending
> address. This would cater for GMail and many others.
> 
> You could also defer after the DATA has finished. You will now have the
> message ID which you could use as part of your checks.
> 
> 
> Warren

The message ID is not a mandatory header, so that could be a problem.  I use 
the date header, which is mandatory. (You could opt to substitute the body size 
if the date is missing.)

Phil.
---------------------------------------
Phil Chambers ([EMAIL PROTECTED])
University of Exeter


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