Linx is calling on ISPs to take down websites used to sell spamming tools such as CD-Roms containing illegally collected e-mail addresses.
As part of Linx's Best Current Practice (BCP) policy, Linx members have also agreed to shut down websites run by the spammers in a bid to remove the financial incentive to send spam.
Linx regulation officer Malcolm Hutty said, "ISPs are not just trying to avoid their own users sending spam, we want to put the spammers out of business altogether.
"ISPs have taken action under the BCP to withdraw e-mail services or even internet access for spammers.
"In fact, ISPs have also applied this sanction against each other if they knowingly fail to take action to prevent spamming by their customers."