On Thursday 20 January 2005 17:42, Nick Smith wrote:
> > Let me see if I have this right:
> >
> >
> > [SMTP_A] ---- [COMCAST GW] ---- [SMTP_B]
> >
> > And you are saying that SMTP_A can _receive_ email, but cannot _send_
> > email?
>
> that is correct, they are recieving mail on theirdomain.org and sending
> on smtp.comcast.net which is now blocked.

Assuming SMTP_A is a client of comcast and SMTP_B is somewshere in the outside 
world, this is a rediculous setup.

Blocking SMTP connections from SMTP_A to SMTP_B directly is reasonable. While 
it can't prevent intentional spamming from SMTP_A, it does prevent spamming 
viruses/worms/trojans from abusing SMTP_A.

Preventing SMTP_A from using comcast's SMTP server as a smarthost and blocking 
direct SMTP connections from A to B leaves all comcast customers without 
email. Well, without outgoing email. There is technical solution to this but 
there is a social one: Threaten to shoot comcast's policy makers through 
their heads. ;-)

Uwe

-- 
Alternative phrasing of the First Law of Thermodynamics:
If you eat it, and you don't burn it off, you'll sit on it.

http://www.uwix.iway.na (last updated: 20.06.2004)

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