ftr wrote:
> Whenever I click on a link in a mail in TB from my train provider I get
> blocked and get the message:
> Firefox can't establish a connection to the server at
www.smartadserver.com
www.smartadserver.com
Look at it again.
www . smart ad server . com
*** . ***** ad server . ***
Obviously it's an ad server. You didn't mention if you are or are not
using AdBlock or other extension in Firefox to block ads, or you are
blocking ad sites in a URL block list in an anti-virus program or
other security software, or you use someone else's pre-compiled
'hosts' file that you never bother to review those 16,000+ entries, or
are perhaps blocking ad sites up on the DNS server to which you submit
DNS lookups, or wherever the link goes runs a script or uses
meta-refresh and you use NoScript that blocks them unless
permissioned. There are lots of ways to block "bad" sites.
Look at the link in the e-mail. No, not what is displayed in the
HTML-formatted message. At the *raw* source showing the href
attribute in the <A> tag in the HTML *code* of the e-mail. The sender
is redirecting you through an advertising and tracking server. So do
you really want to be clicking on links that track your e-mails?
Often you can determine the target of the redirection by looking at
the parameters of the URL. The first part will have the domain for
the redirection site. Somewhere after the "?" delimiter in the path
portion of the URL you'll find parameters which will list the target
site to which you get redirected. Alas, it may use URL encoding for
special characters (they look like %xx where xx is a 2-digit hex
value) that you'll have to change back to normal characters to use as
its own separate URL. It is also possible that you never get to see
the target site. A server-side script could use a table that only the
server-side script can see for the target site so all you see are some
incomprehensible parameters in the redirection URL. Then, again,
maybe the sender of that e-mail is actually sending you to an
advertisement page hosted by that ad server. You never described the
URL (what you see and what is the HTML code for it).
Tell the sender that such e-mails using redirection (for tracking or
any other covert purpose) are viewed as phishing attempts and will be
reported as such. I'm assuming the URL doesn't go directly to an ad
hosted by that server but is a redirection to somewhere else. If the
link doesn't go directly to the professed domain then the sender is
lying to you.