SRN (SurGATE^TM Reputation Network) is a database keeps IP addresses. SRN evaluates datas come from sensors

common in worldwide and determines the hosts those are likely sending unwanted e-mails. SRN is not just a blacklist

database it is also a reliability database. It is strongly recommended that you save your SMTP server in SRN if you are

sending legitimate e-mails those are also requested by recipients.