ip blocking sendmail

Ip Blocking Sendmail

IP Address - Internet Protocol Address.
IP addresses can be either fix or dynamic.
This differs from a block list in that it actively boycotts tcp/ip addresses known to send spam or host spammers.
GRE and IPIP Tunneling is a technique used to connect two masqueraded networks together.
Routing filters look for evidence like forged header lines, or ip addresses known to have been spam sources.
When the mail host queries a DNSBL for a particular host name or address, it receives not an IP address, but a coded answer resembling an IP address.
Routing filters look for evidence like forged header lines, or IP addresses known to have been spam sources.
Block List: A publicised list, usually commercial, of ip addresses known to be sources of spam.
A block list is also a feature of anti-spam software that allows users to designate ip addresses, domain names and individual email addresses from which no mail will be accepted.
An open socks proxy is a security hole used by spammers to hide their originating ip address.