Re: [exim] Retry on 550 errors

On 05/12/06, Marc Perkel <marc@???> wrote:
>
>
> Dave Lugo wrote:
> > On Tue, 5 Dec 2006, Marc Perkel wrote:
> >
> >
> >> I know it's a permanent error. Here's the situation. I do front end spam
> >> filtering. What happens sometimes is Iset up a new customer and they
> >> point their MX to me and I clean the spam and forward on to them. It
> >>
> >
> > I do that too at $dayjob.
> >
> >
> >
> >> works for an hour and then their server realizes it's not the lowest MX
> >> anymore and starts bouncing everything I forward. I don't know about
> >> this unless something alerts me like the customer calling about reports
> >> of email bouncing.
> >>
> >
> >
> > I've _never_ seen this happen, and I've worked at my current employer
> > for ~7 years, and a lot of domains.
> >
> > Perhaps the pre-cutover checklist you're working from is incomplete?
> >
>
> That's possible. How would you know in advance that the target server
> will start to refuse email once the MX has changed?

How about spooling a backup copy of their mail starting at go-live -
remember when the first 550 was and re-delivering from that timestamp
when they mend it?

Peter



--
Peter Bowyer
Email: peter@???