Bounce Rules

[Dave]

On Wed, Oct 26, 2005 at 07:08:48PM -0400, Matt Kettler wrote:
> Dave Shariff Yadallee - System Administrator a.k.a. The Root of the Problem wrote:
> > I did order the book and I do recommend it.
> > 
> > Question, for bounce rules, ho do I bounce spam > a score of 7.5 ?
> > 
> 
> Don't..
> 
> Rejecting spam at SMTP delivery time is fine, but don't _ever_ bounce it. I for
> one treat it as intentional malicious misconfiguration and will *immediately*
> blacklist a network that bounces a joe-jobbed spam to me.
> 
> Unfortunately, all of mailscanner is done post-delivery, so you can't do SMTP
> time rejects using it.
> 
> Of course, the post-delivery scanning part of Mailscanner's design is what makes
> it deal with bursty loads so well.
> 
> Sadly, you can't have it both ways. Delivery time scanners can reject, but the
> fact that they scan at delivery time severely limits your peak delivery rate.
> SpamAssassin instances are large, and you'll wind up memory limited in terms of
> the number of simultaneous scanners you can have running. Eventually this will
> lead to dropped connections which will have to retry delivery later.
> 
> Admittedly the average delivery rate is the same, but queue-first-then scan
> methods like MailScanner can deal with a short term burst at the expense of
> increasing the mail queue depth.
>

delete works better.
 
> ------------------------ MailScanner list ------------------------
> To unsubscribe, email jiscmail at jiscmail.ac.uk with the words:
> 'leave mailscanner' in the body of the email.
> Before posting, read the Wiki (http://wiki.mailscanner.info/) and
> the archives (http://www.jiscmail.ac.uk/lists/mailscanner.html).
> 
> Support MailScanner development - buy the book off the website!
> 
> -- 
> This message has been scanned for viruses and
> dangerous content by MailScanner, and is
> believed to be clean.
> 

-- 
This message has been scanned for viruses and
dangerous content by MailScanner, and is
believed to be clean.

------------------------ MailScanner list ------------------------
To unsubscribe, email jiscmail at jiscmail.ac.uk with the words:
'leave mailscanner' in the body of the email.
Before posting, read the Wiki (http://wiki.mailscanner.info/) and
the archives (http://www.jiscmail.ac.uk/lists/mailscanner.html).

Support MailScanner development - buy the book off the website!