Hi, I tried configuring my anti SPAM software to use "SBL-XBL.spamhaus.org". It does a good job but this also filters some valid mails. For example if some customers mail server is listed in XBL for some time. Then we will not receive the mails from this server. SPAM mails keep coming from different source IP so if i manually keep adding IP's to the block list may not me useful. I want learn from experts on this. Is it a good idea to use XBL?? Is there a better way to control this? Will this help me in saving bandwidth? Please let me know your views and experience. Regards Praveen R --------------------------------- Yahoo! FareChase - Search multiple travel sites in one click.