Cluster of MailScanners

[Pentland G.]

A large Spam attack will likely be from a small group of hosts (or just
one) so this won't help much as they will have cached the DNS lookup.
Also the propagation time will probably kill this approach.

There are two answers:

1. Network load balancing, either in hardware, or software like...
http://lcic.org/load_balancing.html

2. Milter-Limit... this is a sendmail hack that effectively blacklists
any host that sends more then a given number of emails in a time
frame...

Just my 2 cents...

Gary

John Schmerold wrote:
> Has anyone tried following approach to configuring a cluster of
>            MailScanner boxes? 1. Get an account at dyndns.org - They
> are good guys & don't ask for a bunch of money 2. Define your mx
> record to be mx1.dnsalias.net 3. Setup as many MailScanner boxes as
> your daily volume dictates (Let's say you're setting up 2 units) 4.
> On the hour, run ddclient on box #1, on the 1/2 hour run ddclient on
> box #2 (see http://www.dyndns.org/support/clients/dyndns.html for
> info regarding ddclient) It seems to me that this should help the
> huge spam attacks people are seeing. Will this work, is there a
> better way?        
> 
> ------------------------ 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!

------------------------ 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!