Heads up for spamhaus.org problems

Tim Boyer tim at denmantire.com
Mon Aug 20 22:22:00 IST 2007

On Sun, 19 Aug 2007 22:02:01 -0400, Richard Potter <rpotter at rpcs.net> wrote:

>On Mon, Aug 20, 2007 at 12:34:23AM +0200, Raymond Dijkxhoorn wrote:
>> >Just doing a routine check here, and I have a few mail servers 
>> >misbehaving. It
>> >*appears* sendmail dnsbl to zen.spamhaus.org is timing out, and causing 
>> >mail
>> >delivery delays, or none at all.
>> >
>> >I'm going to discontinue spamhaus, and see what happens.
>> Buy rsync from them. Most likely you fire a lot of lookups on their 
>> servers and they started to ban high volume mailservers some time ago.
>> We have seen this in a lot of places allready.
>> May i ask how much mail are you processing daily?
>Thanks for the reply Raymond.. I wasn't aware they were doing that. These
>are low volume servers, less than 2,000 messages per day. Does that count
>as "high volume" to spamhaus?

"Use of the Spamhaus DNSBLs via DNS queries to our public DNSBL mirrors is free
for low-traffic mail servers serving less than 100 users. Use of the Spamhaus
DNSBLs by commercial or corporate networks, ISPs and ESPs, requires a
subscription to Spamhaus's Data Feed service."

I'd be shocked if 2,000 messages per day counts as high volume.  That's 20
emails per person per day.

tim boyer
tim at denmantire.com

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