Arrrrgh, many thanks for opening my eyes on that. I'm glad about exim's
acls, so most of the spammers/virusbots were blocked before my machine
spreaded dumb bounces.
You're right, I have to retire these routers immediately.

But then: How can I achieve my policy, to

1. Deliver unknown recipients mail to postmaster
2. Send a bounce to the sender, copy of it to postmaster

from my check_rcpt acl?

If anyone is able to answer this, I will change the topic.
In my case, the long faked spam file is now closed.

Thanks
sebastian

Am 16.11.2005 22:16 Uhr schrieb "Fred Viles" unter <[EMAIL PROTECTED]>:
> 
> 
....
> Since the message gets accepted, this router causes *delivery* to
> fail, which results in the DSN (bounce) messages that you see frozen.
> It is also presumably causing your server to generate and
> successfully deliver collateral spam to innocent third parties whose
> valid addresses are forged as the senders of spam and malware
> delivered to your system.
> 
> (tests it...)
> 
> Yup.  And since you return the full incoming message in the DSN, you
> are running an abusable open relay.  This will probably get you
> blacklisted in due course.
> 
> 
> You should also delete the last router.  I can't emphasize that
> enough.  You should *not* be generating bounces for messages you did,
> after all, accept and deliver (to postmaster).
> 
> - Fred
> 
> 
> 
> 



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