From: Aaron Wolfe (aawolfegmail.com)
Date: Tue May 06 2008 - 13:02:47 CDT

• Messages sorted by: [ date ] [ thread ] [ subject ] [ author ]

On Tue, May 6, 2008 at 6:54 AM, Charles Marcus <CMarcusmedia-brokers.com>
wrote:

> On 5/6/2008, Simone Felici (s.felicialpikom.it) wrote:
>
> > My servers process more or less 6.500.000 mails per day. Of them ONLY
> > 170.000 mails are accepted, the rest is, in order:
> > - blocked by RBLs (65%)
> > - blocked by greylist (30%)
> > - blocked by other causes (not found, mailbox full, other reasons) (5%)
> >
>
> Really? I would think that the vast majority would be blocked by recipient
> validation?
>

yes this seems odd, usually bad address would be #1 I think.
here I see (rough average over 91.5 million messages and ~100 domains):

35% bad recipient
25% blocked by greylist
20% blocked by DNS/RFC checks
20% blocked by RBLs

Are you using RBLs/greylisting before verifiying the user exists? This
seems wasteful, or is there a reason I don't know?
-Aaron

• Messages sorted by: [ date ] [ thread ] [ subject ] [ author ]