This commit is contained in:
Zhang Huangbin 2015-06-14 00:14:19 +08:00
parent 4deddd669e
commit 4e7507a489
2 changed files with 4 additions and 4 deletions

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> Important note: if you're running a high-traffic mail server, you'd better
> setup a local DNS server to cache DNS queries, because free RBL services
> like zen.spamhaus.org may improperly reply if your server exceed the limit
> DNS queries. Also, mail service higly relies on DNS queries, so a local
> like zen.spamhaus.org may improperly reply if your server exceed the
> DNS query limit. Also, mail service higly relies on DNS queries, so a local
> DNS server speeds up the mail flow.
You can enable additional DNSBL services in Postfix to reduce spam. We use

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<blockquote>
<p>Important note: if you're running a high-traffic mail server, you'd better
setup a local DNS server to cache DNS queries, because free RBL services
like zen.spamhaus.org may improperly reply if your server exceed the limit
DNS queries. Also, mail service higly relies on DNS queries, so a local
like zen.spamhaus.org may improperly reply if your server exceed the
DNS query limit. Also, mail service higly relies on DNS queries, so a local
DNS server speeds up the mail flow.</p>
</blockquote>
<p>You can enable additional DNSBL services in Postfix to reduce spam. We use