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Exactly what I was looking for. &nbsp;Thanks William!!
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Exactly what I was looking for.  Thanks William!!

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I have a customer that is using Gmail for their main domain email system.<br />
<br />
Is there a way to have all of the email first get sent to a SPAM appliance under the customer's control and then get forwarded onto Gmail after the fact? &nbsp;Is this something that has to get coordinated with Google to allow incoming mail specifically from this SPAM appliance's public IP address?<br />
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I know I can change the MX records to send the incoming mail to wherever I want, but it's the relaying/delivery to Google that I don't know about.
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I have a customer that is using Gmail for their main domain email system.

Is there a way to have all of the email first get sent to a SPAM appliance under the customer's control and then get forwarded onto Gmail after the fact?  Is this something that has to get coordinated with Google to allow incoming mail specifically from this SPAM appliance's public IP address?

I know I can change the MX records to send the incoming mail to wherever I want, but it's the relaying/delivery to Google that I don't know about.

Additional SPAM filtering for Gmail

Various techniques are used to prevent email spam (unsolicited bulk email). No technique is a complete solution to the spam problem, and each has trade-offs between incorrectly rejecting legitimate email (false positives) vs. not rejecting all spam (false negatives) - and the associated costs in time and effort. Anti-spam techniques can be broken into four broad categories: those that require actions by individuals, those that can be automated by email administrators, those that can be automated by email senders and those employed by researchers and law enforcement officials.