Re: [exim] Cheap Fast Grey List Idea

Martin A. Brooks wrote:
> Marc Perkel wrote:
>> The idea of having 2 good MX records is that most MTAs (except Qmail)
>> will immediately retry on the next higher MX.
>
> That's a bad assumption.
>

The point is that MTAs that don't follow the rules will see a delay the
first time based on their retry settings. MTAs that play by the rules
will only delay for a fraction of a second the first time. In either
case no email is lost.