[Mailman-Users] Spam mails being received on the mailing list, solution needed....

dear all,

we are receiving around 1000 spam E-mails on a daily basis via one of our mailing lists. Most of these spams are received in form of subscription requests. The spam appearing in a huge scale is badly effecting the performance of the list. Would appreciate if anyone can suggest us the proper remedies to resolve this issue.

Regards,

Amit Bhatt