On Wednesday, August 18, 2004, 7:42:38 PM, Daniel Quinlan wrote:
> Jeff Koch <[EMAIL PROTECTED]> writes:
{Quibble: this seems to be a private message from Jeff to Daniel.]
>> I question your statement that these DNSRBL can handle the load. Our
>> mailservers are handling over 10K messages per hour
> Sites with high volume generally use local copies of blacklists. That
> is considered a best practice. It doesn't require any code changes on
> our part, though. 10K messages per hour is not very big, but you might
> want to think about it.
10k an hour is roughly 240k per day, which is well within the
range most RBLs prescribe for local mirroring of their zone
files. Please strongly consider setting up rbldnsd and rsyncing
the RBL zones that you use instead of querying the public name
servers.
http://www.spamhaus.org/xbl/index.lasso
> Data Feed: Zone Transfers (rsync) for ISPs
>
> Internet Service Providers and large corporate mail services
> with an incoming traffic of over 200,000 emails per day should
> use zone transfers of the Spamhaus DNSBLs to a local DNS server
> on your network. To submit a request for zone transfers see:
> Data Feed Application Form. http://www.spamhaus.org/datafeed/index.html
http://dsbl.org/faq-help#secondary
> Can I run my own DSBL DNS secondary?
>
> DSBL provides direct rsync access to our zones. To retrieve one
> of the zones, install rsync and run the following command:
>
> rsync -t rsync.dsbl.org::dsbl/<file> .
>
> where <file> is one of:
>
> rbldns-list.dsbl.org
> rbldns-multihop.dsbl.org
> rbldns-unconfirmed.dsbl.org
http://www.ordb.org/faq/?&setlang=pl#zone_transfer
> Is DNS Zone transfer for our own use possible?
>
> The short answer: No
>
> The "complete" answer: We do not allow anonymous zone
> transfers, and unless you receive lots of email (hundreds of
> thousands a day), the current setup shouldn't be a problem. We
> have quite a few well connected nameservers on almost all
> continents.
>
> However:
> As of late, we have begun allowing zone transfers via rsync. If
> you are interested in this, and you are willing to sign a
> reasonably strict non-disclosure agreement, feel free to get in
> touch with secondaries at ordb dot org.
http://www.surbl.org/rsync-signup.html
> SURBL Rsync Access Request
>
> For systems processing large volumes of inbound messages, for
> example more than 100,000 per day, we recommend setting up a
> local caching name server for mirroring SURBL and other RBL
> zone files. Doing so offers multiple advantages:
>
> 1. Significantly improve the performance of your mail servers
> 2. Reduce your network traffic
> 3. Help reduce public DNS server traffic
(Our site has several Howtos about setting up rbldnsd and rsync.)
Etc.
Jeff C.
--
Jeff Chan
mailto:[EMAIL PROTECTED]
http://www.surbl.org/
