[SATLUG] Fwd: Undelivered Mail Returned to Sender

[Brad Knowles]

At 6:36 PM -0600 2/9/07, Daniel J. Givens wrote:

>>  Can someone explain to me how broken a mail system has to be in order to
>>  generate this kind of a bounce?
>
>  No broken-ness. It looks like the server didn't like that your mail which
>  says it's from shub-internet.org is coming from his.com. Sender/source
>  domain mismatch.

Right, in which case the receiving machine is, by definition, broken. 
Very broken.

There are billions of people on this planet, any of whom should be 
able to send e-mail as themselves from their own machines.  If they 
are user at example.com, and all their e-mail is handled by 
ISP-domain.example.co.uk, they should be able to send their e-mail as 
their username from those machines.

>  This is a defensive tactic used to keep spammers from sending mail via
>  some zombie and saying they're from paypal.com, or something else.

Right, which is a seriously broken way to mis-handle e-mail.

I mean, do you really want to break all mailing lists in existence in 
this world?

-- 
Brad Knowles <brad at shub-internet.org>, Consultant & Author
Co-author of SAGE Booklet #15 "Internet Postmaster: Duties and 
Responsibilities"
Founding Member and Platinum Individual Sponsor of LOPSA: 
<http://www.lopsa.org>
Papers: <http://tinyurl.com/tj6q4> LinkedIn Profile: 
<http://tinyurl.com/y8kpxu>