Hello All, Considering all of the interesting information that's being going around regarding Barracuda, and it's RBL's, I probably wouldn't use it. Not any time soon. But that's based purely on reputation, and has nothing to do with hit ratio. Our Spam gateway seems to do just fine without it. We query 3 RBLs, which get rid of a great deal of Spam:
bl.spamcop.net zen.spamhaus.org cbl.abuseat.org Everything else (Spam) gets stopped by HELO rejections, Virus Scanning, Recipient Rejection and Spamassassin Scanning. Mail Stats since 4th June: Total Messages Processed: 5281347 RBL Rejected: 60.6 % HELO Rejected: 27.4 % Invalid Recipient Rejection: 2.8 % Viruses (detected by ClamAV, & Kaspersky), and other Spam detected by Spamassassin: 1.1 % Clean Messages: 8.1 % What really makes a difference is the HELO rejections - we never did this before 4th June, and the amount of Spam that is delivered has dropped so significantly since then is... quite remarkable. (at a loss for other words). So perhaps instead of adding another RBL, maybe some admins need to consider adding in some HELO checking / rejection. Thanks and Cheers, Michael Hutchinson
