[Dovecot] what best for anti-spam filter?
fy at 5dshu.com
Tue Jul 24 11:41:58 EEST 2012
于 2012/7/24 16:29, Robert Schetterer 写道:
> Am 24.07.2012 10:22, schrieb fy:
>> 于 2012/7/24 15:16, Arnaud Abélard 写道:
>>> On 07/24/2012 06:49 AM, Noel Butler wrote:
>>>> On Tue, 2012-07-24 at 11:58 +0800, fy wrote:
>>>>> what anti-spam for you used ? dspam?spammassian? amavisd-new ? what is
>>>>> best ?
>>>> amavisd-new with spamassassin and anti virus scanner, clamav with
>>>> sanesecurity rules
>>>> use enforcing rules in mail server, like block hosts with no DNS/rDNS
>>>> Enforce SPF, publish SPF with hardfail
>>>> use DNSBL's in your mail server, spamhaus, spamcop, spam.sorbs, and
>>>> more etc.
>>>> milter regex to stop dynamic/suspect hosts
>>> And first of all, even if this is not dovecot related, use a
>>> greylisting solution.
>>>> There is no one solution, the solution, is a box of many tricks
>>>> You might get the odd false blocking, but if system opers can not be
>>>> bothered running a compliant network with standardised naming
>>>> conventions for servers, then it is not my problem, and we have had very
>>>> very very few complaints about this type of policy in over a decade. If
>>>> someoine sooks to you, educate them, dont whitelist them.
>>> Indeed! Fighting spam is a continuous task. While greylisting will cut
>>> down the amount of spam by more than 50%, the remaining 50% will give
>>> you the hardest time and will keep changing to bypass your rules.
>>> You'll need to keep an eye on the flow of false negatives or false
>>> positive you are getting...
>>> We (72,000 mailboxes) are currently using amavisd-new with
>>> spamassassin and CRM114 via a custom plugin instead of the default
>>> bayesian filter. Also like Noel, we're using DNSBLs, SPF (although we
>>> had to publish a permissive record since some of our users are using
>>> their ISP smtp instead of our own).
>> try slockd ,it is a policy server for postfix
> sadly there is only poor english info
Download the file for slockd and unzie it . see INSTALL and README files
.it's easy use and install .
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