Re: Google Apps and Redundant Mail Servers

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Author: Michael Butash
Date:  
To: plug-discuss
Subject: Re: Google Apps and Redundant Mail Servers
Hmm, that is rather confusing. You can tell an engineer wrote it. :)

I think the key is here:

5. Identify the legacy mail server as an inbound mail gateway.

Adding the legacy server as an inbound mail gateway lets the Google Apps
mail servers know to expect a high volume of messages forwarded from it.

I think the "dual delivery" comes from the fact you're setting the mx
record to naturally resolve external forward to your domain, and also
that you will be forwarding from another mx server, your current one, as
well. You're defeating their spam/spoof protection basically, for a
duration. You just let them know that someone will spike a detection
algorithm and not to blacklist them.

I migrated a domain of mine to it to play with, but rather a dormant
one. If you're getting email today, this is a graceful transition
method while you drainstop off your current mx.

-mb



On 11/17/2011 06:57 PM, Eric Cope wrote:
> Hey all,
> I am thinking about using Google Apps for my business email account. I
> read here:
> http://www.google.com/support/a/bin/answer.py?answer=178332
> about dual delivery, but their docs are a little confusing. Has anyone
> configured this? I am not sure what other details you might need, so let
> me know.
> Thanks,
> Eric
>
>
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