[Mimedefang] Want to modify "read-receipt" img tags in mail

[Kevin A. McGrail]

The article at the end of this message reaffirmed my interest in modifying
emails that have tracking methods in them.  Currently all of the ones I have
seen use <img src> tags.

I tried looking at squirrelmail's source to get inspiration on how to
determine an unsafe image but it was about as clear as mud.

NetMsg's system looks like this:

In the text/html parts, I've seen this:
<img src=3D"http://img.msgtag.com/oaaEAlzg/degscgspahbfBevhyFyvmmq.gif">

Anyone have some ideas on doing this (ok BESIDES David who is just going to
say disable HTML email ;-) )  BTW, on this note, NetMsg puts this text into
the text/plain part.  I imagine some email clients actually must do
something with it:

<img src=3D"http://img.msgtag.com/oaaEAlzg/degscgspahbfBevhyFyvmmq.gif">

Regards,
KAM

Service to test frontiers of e-mail privacy

USA Today reports that a new Internet service will be launched next week to
allow users to secretly track the e-mail they send. The service,
DidTheyReadIt.com, will allow subscribers to see whether someone opens their
e-mail, how long the recipient keeps it open and even where geographically
the recipient is reading it.

The recipient will not be made aware that the mail is being tracked.
Internet experts say the service invades people's privacy and is unlikely to
be well received.

"It will freak people out," says Internet expert Esther Dyson.