Amagob

Thanks spamcop.net

Exchange 2003 no longer needs third party software to link into DNS-based blacklists.
Older versions of Exchange require a free plugin.

Martijn Jongen has provided a plugin for Exchange: ORFilter
GFI MailSecurity is another option for Exchange users.
Vamsoft Open Relay Filter is another commercial option for Exchange 2000 users.
(Third party software is not supported by SpamCop)

For Exchange 2003:
Make sure you install SP2 first, as it contains some important updates for Intelligent
Message Filtering.
Display Name: spamcop
DNS Suffix: bl.spamcop.net