I have been getting hundreds of emails "You have a message from Yulia" The really crazy thing hers is that they all seem to have different IP addresses so putting the IP into the global IP blacklist does not seem to be helping. Is it possible that IP addresses are being spoofed and what is the best way to handle this.
It might juat be that the mail is sent from a botnet and that many IP addresses are all from infected servers. If the mail contains always the same text, then yu should consider to block them with the postfix header or body filters in ispconfig.
