Rules to block outgoing emails, keep them internal

Dear Ms,

I want to create a rule at the Postini to block the users to send any
email that is for another domain, and permit the sending for my
domain, i.e. keep all email internal.

I've tried to create a rule that bounces if the recipient does not
match the regex rule "@my\.domain\.com", but if there is another
recipient that is to @my.domain.com, it delivers.

Thanks for any help!

Best regards,

Eduardo Bortoluzzi
Spread Teleinformática

For all users or for specific users? I'll assume you are using Google
Premier?


FrankM

Setup a separate user sub-group and move those users for internal
messaging only into that org sub-group. Then in the sub-orgs outbound
content filter create a filter to;

Match: Any rule
1. Recipient - does not contain - @yourdomain.com

Any user that sends outbound email other than to your domain will
bounce. You can also send a copy to a quarantine address.


FrankM




On Jan 19, 3:54 pm, FrankM - Power Poster <[email protected]>
wrote:
> > Spread Teleinformática- Hide quoted text -
>
> - Show quoted text -

Hi, I'm looking for the same solution. I've been testing and it's as
Dudinha said,
you solution only works if there's only one recipient and it matches.
If there's another recipient with another domain, your rule doesn't
catch it.

say: my domain is xxx.com and I have this rule: Recipient - does not
contain - @xxx.com to bounce

if I send mail to [email protected] then it bounces
but if I send mail to [email protected], [email protected] then it goes
through.

my company's concern is some people can send sensitive info outside
the company. I know it's silly, there are so many ways to do this. But
this issue is a deal breaker for me.

Thanks!

On Jan 20, 7:53 am, FrankM - Power Poster <[email protected]>
wrote:
> Match: Any rule1. Recipient - does not contain - @yourdomain.com
> On Jan19,3:54 pm, FrankM - Power Poster <[email protected]>

You can do exactly what you want using regular expressions.  (Its kind of a pain because of postini's regexp limitations) but if your creative you can do it.

My rules are something to the effect.

• headers match regexp To:[^@]{0,25}@yourdomain.com[^@]{0,25}      (this works to catch emails being sent to a single recipient)
• Postini use to have a flaw i there regexp checker which would allow To:([^@]{0,25}@yourdomain.com[^@]{0,25}){0,25}   (which would work with up to 25 recipients)
  
• Drop all

let us know what you come up with.