Grey Listing rocks! No more Spam!

Posts: 1 · Posted: Sat May 17, 2008 10:54 pm

rcorbin wrote:

Some settings we found while fighting 'spam floods' on our shared servers were implementing some RBLs. This is how we would typcally set the servers in the event of a flood from something like a botnet.

Login to SmarterMail Admin - Security - Anti-Spam Administration - Add RBL List

RBL: Backscatter.org - Weight: 5 - DNS Server: ips.backscatterer.org

I would consider such a usage as "not optimal".

ips.backscatterer.org is most effective if you are using it for blocking in SAFE MODE.

SAFE MODE means you are doing queries if Envelope From is either <> or postmaster only.
Used that way you can not loose any real mail, but it will protect you against fake bounces or abusive sender callouts.

See: http://www.backscatterer.org/index.php?target=usage for more details.

Please also note that the correct domain is backscatterer.org, the other one (missing 2 letters) does not belong to the project and is registered by a domainsquatter.

Posts: 65 · Posted: Sun May 18, 2008 1:22 am

good catch I had the RBL's name misspelled (blah copy and paste!), but the DNS server was correct in the post with the er* at the end.

I find the settings to be fine. It only gives the message a score of 5. With the settings that I put it has to have a score of 20 to fail. Most providers who still do backscatter it usually comes from servers other then their outbound gateways (if setup 'optimally').

SmarterMail doesn't have a 'safe' mode and it can't be applied to only the postmasters address or System Administrator.

-Ray