> 
> Is it spam or bounces ?

RCPT bounces it looks  like to unknown users.
> 
> Is addressed to valid users or unknown users ?

invalid users on each domain that this cluster (mini)
is accepting.

> 
> Are you rejecting mail to unknown users ?

Yes.

> 
> I'm going to guess, since you didn't tell us, that
> it's bounces and mail 
> to unknown users and you aren't rejecting unknown
> users for some reason.
> 
> Here's a nice regex for simscan to reject those.
> 
>
:clam=yes,spam=yes,regex=^Subject.*failure\snotice.*:^Subject.*Delivery\sStatus\
>
sNotification.*:^Subject.*Mail\sdelivery\sfailed.*:^Subject.*Returned\smail.*:^S
>
ubject.*Undelivered\sMail.*:^Subject.*DELIVERY\sFAILURE.*:^Subject.*Message.Deli
>
very.Failed.*:^Subject.*Undeliverable.*:^Subject.*mail.delivery.status.*:^Subjec
>
t.*Undeliverable\sMail.*:^Subject.*Mail\sSystem\sError.*:^Subject.*Returned\sMai
>
l.*:^Subject.*[D|d]elivery\s[F|f]ail.*:^Subject.*Undelivered\smail.*:^Subject.*f
>
ailure\snotice.*:^Subject.*Envio\sde\scorreo\sfallido.*:^Subject.*Delivery\sNoti
>
fication.*:^Subject.*Notificaci.*:^Subject.*Benachrichtung.*:^Subject.*BULK\sEMA
>
IL\sfrom\syou.*:^Subject.*Delivery_failure.*:^Subject.*bulk\semail\sfilter.*:^Su
> bject.*Non\sdelivery\sreport.*:^Subject.*Information
> Response from 
> listserver.*
> 

kewl.. thanks!


> Happens here all the time, and we aren't rejecting
> unknown users because 
> we are in the middle of a mail server migration that
> hasn't been 
> completed yet so the forward facing MX servers don't
> know which users 
> are valid.


The original problem is the continuation of whats
happening now and WHY I put in the toaster as a front
end to another qmail server (running  Qmail Rocks,
which both have good points, but I really like the
simplicity set up of Bills toaster.)

the main mx server was swamped the first week of
december and I quickly acertained its time to split
functions (pop/smtp). Small domains with under 500
users total, but still...  1300+ connections
continuous is nuts!
The problem was that the QMR server needed to be
updated with the CHKUSER patch but I also wanted to
split things up and put in a cluster where I could
easily add more pop or mx servers as needed.  Thus I
looked at and chose the toaster.  VERY happy I did
this.
Immediately upon moving the old MX server out of the
loop, the new MX server (running the toaster) stopped
accepting the invalid users via chkuser. (should be
noted that I built it with MYsql. I don;t think the
instructions shows the requirements for mysql, but
thats not a problem.)

its been running good stopping things and the more I
place blocks on RIPE, APNIC, lacnic sites it calms
down.
Case in point right now its running on average 36/600
but its after hours and night, in the morning it takes
off again.


thanks for the response!

Nitch.


> 
> Regards,
> 
> Rick
> 


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