Hi,

Would you mind cross posting this to the main Google Apps discussion
group?

http://groups.google.com/group/apps-discuss

There are a lot of discussions about email gateways in the main group.

-alex

On Jan 4, 1:55 pm, Marmina ABDEL-MALEK <[EMAIL PROTECTED]> wrote:
> Setup:
> we have the follwong email setup:
> - mx records is pointing to our anti-spam filter
> - anti-span relays emails to our MTA
> - if the user has migrated to our domain at google apps, the MTA
> relays the emails to aspmx.l.google.com. Otherwise, it routes it to
> our backend mail systems.
>
> Problem:
> the google apps email servers (aspmx.l.google.com) see all the email
> destinated to our users as originating from our MTA server.
>
> when (aspmx.l.google.com) checks the SPF entry, sometimes, it
> discovers that our MTA is not an allowed sender of email message
> coming from not our localdoamin, yet routed throug our MTA. e.g.
> email sent from [EMAIL PROTECTED] to [EMAIL PROTECTED],
> accodrinf to SPF our MTA is not an allowed sender for external-
> domain.com.
>
> To solve this problem, we could add our MTA servers in the Email
> whitelist field in the Google APPS control panel. BUT this would  make
> all the emails originating from MTA be seen as trusted, meanwhile it
> could contain spam. the MTA is just relaying emails destinated to our
> domain. in such a scenario the google apps anti-spam would be disabled
> and spam messages will pass without being checked.
>
> Therfore, i suggest that google apps should have field where we can
> put our email relaying hosts. these hosts should be checked for SPAM
> and not SPF checked.
>
> One final thing, in the above mentioned setup, the followind SPAM
> messages is not detected.
> smap messages with the sender address at our local address, because
> when they become SPF checked, they are seen as coming from a
> legitimate source!
>
> I would like to know, if you are handling such cases in a certian way
> or if you have any suggestion to solve this issues.
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