Am 16.03.2015 um 03:43 schrieb Dave Warren:
On 2015-03-15 17:26, Reindl Harald wrote:Am 16.03.2015 um 01:23 schrieb Dave Warren:On 2015-03-15 15:01, Reindl Harald wrote:surely, only 5% of incoming spam attempts make it to spamassassin / clamav here, but you need to keep in mind the amount of your regular ham messages in your mailflow which unconditionally touch the content scannersWhy would it? I'd hazard a guess that, on a percentage basis, I run less ham though SpamAssassin than spamthan your MTA filters *before* SA just don't work or you have very few legit mail at allNot at all, I just have comprehensive, adaptive, user-learned whitelisting that catch the vast majority of legitimate mail before it hits SpamAssassin. By whitelisting known-good sources aggressively and automatically, I can cut the false positive rate to near zero, allowing me to filter more aggressively at later stages.95% of any delivery attempt is blocked by a sensible DNSBL/DNSWL/PTR/HELO check on the MTA level and never makes it to milters at allSpamAssassin need only be responsible for sorting through mail that isn't already known to be good or bad, putting known-good mail through SpamAssassin is wasteful
we are talking about milters and you can't bypass milters with postfix other than reject before but nor for whitelisting - period
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