X-ASVP eXtensible Anti-spam Verification Protocol
X-ASVP is a method for enabling peer to peer scalable authentication between holders of an Internet e-mail address, with redundancy and reliability provided by secondary (tld) and tertiary (global) providers.Automated techniques for e-mail senders
There are a variety of techniques that e-mail senders use to try to make sure that they do not send spam. Failure to control the amount of spam sent, as judge by e-mail receivers, can often cause even legitimate email to be blocked and for the sender to be put on DNSBLs.
