[Greylist-users] Possible Enhancements

[Scott Nelson]

At 05:07 PM 1/24/2005 -0500, you wrote:
>I was reading some postings on Nanog regarding mail and saw what 
>appeared from the start to be a semi-decent idea...
>
>What if the greylisting process checked for an MX record, and did a 
>simple callback to see if the server was live?  
>

If you're going to go to the trouble of connecting to the MX,
you might as well go the extra step and check if the return address 
is valid, and if it's not, then reject the email.

This may or may not be a good idea from a block spam point of view,
but is it really an enhancement to greylisting?
Seems like a completely different and unrelated technique to me.


Scott Nelson <scott at spamwolf.com>