Re: [Exim] Blocking sobig.f

On Wed, Aug 20, 2003 at 06:15:37PM +0100, gARetH baBB wrote:
> On Wed, 20 Aug 2003, Dennis Davis wrote:
>
> > verify = recipient/callout=10s,defer_ok
> >
> > on the addresses in these domains to possibly stop the above
> > happening.
>
> You want recipient/defer_ok/callout=10s,defer_ok else I think you'll get
> temporary errors for DNS problems, which isn't ideal for a MX relay.
>
> I've actually found 10s is a bit too low, I've stuck on 20s.

You'll also want around >30 seconds to counter the 30 second timeout
for RFC1413 ident timeout that the remote site may be using.

--
Russell King (rmk@???)                The developer of ARM Linux
             http://www.arm.linux.org.uk/personal/aboutme.html