What is SPAM
This is a very short explanation that I've sent to debian-user on
February 13th, 1998.
Relayed Mail
Relayed Mail is delivered through an innocent system that accepts
such mail. It is delivered to senders outside of the local area
(including MX hosting &c). Modern MTA's doesn't allow this
anymore. Our server lists.debian.org does only accept mail for
its own domain, not for others, no relaynig allowed.
Spam
Spam is mainly UCE (unsolicited commercial email (sp?)). That's
mail sent to you and a hundred of others that all didn't want
to receive them. Some of the known Spammers may be blocked
by MAPS RBL ((Mail Abuse Prevention System).
We're doing this on our server lists.debian.org.
Avoiding
Debian GNU/Linux ships some mechanisms for avoiding spam and mail relaying:
© Joey, 13 Feb '98