Re: Advanced tricks I use to get rid of spam using MX 4xx

[Uncle George <netbeans@gatworks.com>]

Marc Perkel wrote:

> Charles Cazabon wrote:
>
> > That is correct.  Any MTA which immediately tries another delivery upon
> > receiving a temporary deferral is broken.
> So - Qmail does it right and every other MTA does it wrong?
Qmail does it correctly, as it was designed before 2001. 
Qmail does not do it correctly because the latest RFC suggests a 
different SMTP strategy.
One might think that after 5 years, the debate over this issue would 
have been resolved. And there would be some progress towards 
implementation.  Maybe like what the spec's says, except also allow  a 
configurable zero or more MX retries. For those who want to be in  
current RFC graces, then set it to min 2. For those who want no retries, 
then set it to max 1.
IMHO, i'm not please with the retry of all MX's as an smtp strategy. 
Even less so as a strategy for spam.