7632Re: [NTO] Question regarding email address
- Feb 1, 2007On Thursday 01 February 2007 09:14, C. H. Sulka (Digital Technology, Inc.)
> I recently received an email, i.e. <john@....>Did you look at the <reply-to> header before you replied to see exactly where
> I sent a reply, which was not bounced back.
you're reply would go to.
and/or does your email client otherwise display where the email will go
to "before" you (finally) opt to actually send out this reply.
> Yet when I try toThe particular email server that sends out the 1st, the original email is
> go to the web site for a look around, my browser reports
> an error, "abcdefg.com could not be found. Please
> check the name and try again".
> Can someone explain how a domain name which does
> not exist can be used as an email address? I'm a bit
critical here. Most, if not all of ISP's email servers would not send it out
due to they'd first verify that the domain must exist before they would allow
to send out this email.
There may, however, be some ISP's that do not run this check.
1. But, then (some spammers) have been known to break into a computer and
install a (rogue) email server on. For example,
as a search term at google search engine used to turn up (it's now old news
a rougue email server does what it does/wants, can do so without regard to
check if a domain exists or not.
2. Anyone, spammer or not, can set up their own email server and opt to or not
to check if a domain exists before sending out an email that is "supposedly"
from a certain domain.
When "from" a domain that doesn't exist this could be a faked/forged "from" in
the header of the email. (there is such a thing as faked/forged "from"
Sender Policy Framework (SPF) is something that can police any
forged/faked "from" header. SPF is somewhat in use that I know of but not in
widespread, everywhere useage/implemented.
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