We have installed spam-filtering system that will block Unsolicited Bulk Emails (SPAM). We hope that this will prevent a huge amount of spam. If you have any question regarding this update, don't hesitate to contact as. We will be happy to answer any your questions.
From SpamCop?_Ts site (http://www.spamcop.net/):
This blocking list is somewhat experimental. This system and most other spam-filtering systems should not be used in a production environment where legitimate email must be delivered. Many end-users and administrators have decided that risking the loss of legitimate email is worth the benefit of blocking most spam. As a result, this list is now used widely and it's reputation for blocking spam while reducing the risk of erronious blocking is growing.