On Mon, 27 Jun 2005, Mark Smith wrote:

>  
> > > The only way to deal with that is to set 
> > smtp_accept_max_per_host = 1.
> > 
> > Thank you.  But it doesn't seem to fix anything, it just 
> > takes longer because the other connections are delayed.  But 
> > the result is the same.  $rcpt_count never gets above 1.
> 
> That's true. All it does is slow them down and stop them sending to more
> than one recipient at a time, some of which will fail and some won't (if
> they're carrying out a dictionary attack). It just gives you more time to
> notice what they're doing and block them before they manage to send you
> hundreds of spam emails.

But I'd rather that they pump up the $rcpt_failed_count so I can drop
them based on that, wouldn't I?  Then they wouldn't get any mail into
my machine.

> > 
> > Now, why would yahoo only send one RCPT per connection when 4 
> > addresses to the same domain are on the same message?  What 
> > is the benefit of doing that -- aside from facilitating spam 
> > from their addresses?
> > 
> 
> I've wondered this myself. There seems to be quite a few mailservers out
> there that do this.

Hmmm.  Very curious indeed.

Thank you.

Marilyn

> 
> - Mark
> 
> 
> 

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