Has postini been taken over?

Fri Aug 20 04:53:05 UTC 2004

At 09:14 AM 19-08-04 -0700, Jay Hennigan wrote:

>Have you or a mail administrator for your domain signed up with Postini
>for spam filtering?  If so, all mail for the domain will flow through
>Postini's servers.  If your mailbox isn't enabled for filtering or is
>set to not filter, all the spam you previously got from anywhere will
>show Postini in the headers.  For that matter, all of your mail to that
>address will have Postini in the headers.

How exactly does "all mail for the domain will flow through
Postini's servers"?  I ask since the IP sending to some postini IP like 
exprod5mx30.postini.com is blocked for outgoing port 25+80.  That means 
that the data is flowing to postini in 1 of the following ways:

a) auto-GRE tunnels
b) email packaged in some way
c) email is being sent via some dialup/DSL connection to postini

I am just trying to understand how postini is bypassing my anti-spam ACLs.

-Hank

>--
>Jay Hennigan - CCIE #7880 - Network Administration - jay at west.net
>WestNet:  Connecting you to the planet.  805 884-6323      WB6RDV
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