Re: How to kill spam?


"Vanguard" <vanguard.news@xxxxxxxxxxxx> wrote in message
news:OQige7dKGHA.2012@xxxxxxxxxxxxxxxxxxxxxxx
"Mike Hyndman" <mike@xxxxxxxxxxxxxxxxxxxxxxxxxxxx> wrote in message
news:ds384s$8k3$1$8300dec7@xxxxxxxxxxxxxxxxxxx

Node name? What's that? An IP address? E-mail cannot be sent to you
using
your IP address and why it is not a concern that your IP address is
divulged in newsgroup posts.

Node name, the bit after the @ and before the domain name (ISP's
definition)
I have a static IP address supplied by my ISP.

My understanding of the e-mail address syntax is:

local-part@domain

but there are sub-parts to each part, so they further divided into
(whitespace only added for legibility):

local-part = word *("." word)
domain = subdomain *("." subdomain)

The local-part is often referred to as the username, and could be
something like "joe" or "joe.p.peterson". Usually the domain doesn't get
longer than needed to identify the mailhost although often just the domain
is only specified (because the domain receives the SMTP traffic on it
border host which knows to which mailhost to route that traffic). So the
domain portion might look like "domain.tld" or "host.domain.tld".
Typically you end up with an e-mail address that looks like:

username@[host.]domain[.tld][.cctld]

where username = your account name
host = subdomain or hostname (which may itself be divided into
further subdomains)
domain = your domain's name (Earthlink, Comcast, Yahoo, etc.)
tld = top-level domain (.com, .co, .net, .org, etc.)
cctld = country code TLD (.us, .uk, .ca, .nl, etc.)

E-mail addresses are defined under the mailto: URL scheme in RFC 1738
(ftp://ftp.rfc-editor.org/in-notes/rfc1738.txt) which refers back to RFC
822 for syntax (ftp://ftp.rfc-editor.org/in-notes/rfc822.txt). It can be
daunting to wade through the BNF (Backus-Naur Form) notation to figure out
what the parts of a mailto: URL are called. Might be easier to read
http://en.wikipedia.org/wiki/E-mail_address.

"node" would refer to the the most granular portion of the domain part;
i.e., the identified host or subdomain identified at the left end of the
domain part. This would be the node in their network although it could
also be a subdomain (because a host is inferred by default or may be to a
farm of load-balancing hosts).

Okay, you can wake up now.
V

;-) A rose by any other...etc.,

I've printed this off for future reference.

Many thanks

Mike H



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