Force a sender's email to quarantine?

Robert Lopez rlopezcnm at
Wed Jan 20 19:38:01 GMT 2010

On Wed, Jan 20, 2010 at 11:31 AM, Kelly, James <jakelly at> wrote:
> We have a very similar script watching our outbound mail logs. To
> "quarantine" the suspect outbound mail we use the script itself (perl,
> in our case) to add the suspect messages' from address with a redirect
> action into the postfix sender_restrictions table on the gateway(s) and
> then regenerate the .db.
> from at large.chinese.isp     REDIRECT quarantine-acct at ourdomain.tld
> If the spammer changes the from, the script notices and adds the new
> from(s) also.
> We use scripts to resend the messages in the quarantine account with the
> original from/to if they turn out to be false positives.


That seems a simple idea. Thanks for pointing out is is possible to
this with postfix.

Robert Lopez
Unix Systems Administrator
Central New Mexico Community College (CNM)
525 Buena Vista SE
Albuquerque, New Mexico 87106

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