Hi all,

If you are running your own email server and you are using SpamCop
(spamcop[.]net) somewhere in your spam filtering set-up, this is
important.

The service has had its DNS registration lapse and now points to a
domain parking service. More importantly, any lookup against the
SpamCop blocklist will return a positive response, which spam filters
take to mean the domain is listed.

While it would not be difficult for a DNSBL client to distinguish
between these responses and proper DNSBL responses (which usually are
in 127.0.0.0/8), but in practice most don't.

So if you are using SpamCop, it is strongly advised you remove it from
your DNSBL client until the domain starts working again.

Martijn

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