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FAQs: Postini Transition to Google Apps

If you have questions, or if you need troubleshooting assistance during or after your transition, please refer to the following frequently asked questions and answers. See also the FAQs in the Postini Transition Resource Center.

How do I know when it's time for me to begin my transition to Google Apps?

Before you can begin your transition to Google Apps, you will receive a series of email communications from Google with instructions about your upcoming transition. When you receive your Transition Invitation email, which includes a link to your Transition Console, it's time for you to begin. If you're a direct customer, you'll have 30 days to complete your transition once you receive this email. If you're a resold customer, you'll have 45 days.

Note: Online customers will also have 30 days to complete their transition. For details, see What's different if I purchased Postini online? in the Postini Transition Resource Center.)

Is there a document that details how to perform specific tasks in the new Google Admin console that were previously done in Postini?

Yes. For instructions on how to perform many tasks in the Google Admin console that are comparable to Postini, and to learn how to modify specific Google Apps settings after your service transition, see Admin checklist: Getting started with your Google settings in the Postini Transition Guide. See also Configure advanced settings for Gmail in the Help Center. These articles link to further articles that describe how to configure Postini-like email settings, such as Default routing, Content compliance, Attachment compliance, and more.

How will Google's spam and virus filtering compare to Postini's?

Although the overall filtering effectiveness is very comparable, you should expect the filters to behave differently, acting more strict or lenient on different types of mail. For details, see How Gmail spam and virus filtering differs from Postini.

How can users report spam?

Google Apps spam detection technology learns from user input. If a user indicates to the system that a message is spam or not spam, this lets us know whether or not these kinds of messages should reach that user’s Inbox in the future. The more a user reports spam (or indicates that a message is not spam), the more effective this filtering mechanism becomes.

Depending on how you access your mail, here’s how it works:

  • Gmail users can report spam by clicking Report spam (or Not spam) in the Gmail interface. Users can also view their spam by clicking the Spam folder.
  • Users of Google Apps Sync for Microsoft Outlook® can view Spam by looking inside the Junk E-Mail folder located right below the Inbox. User can report spam to Gmail by moving the message from the Inbox folder to Junk E-Mail folder, and they can report non-spam to Gmail by moving the message from the Junk E-Mail folder to the Inbox.
  • If you’re using an on-premise/non-Gmail system, you can use Quarantine Summary and Message Center.
How do Quarantine Summary and Message Center work in the Google Apps platform?

Once your orgs, users, and settings are moved over from Postini to Google Apps, you will automatically begin using the Google Apps spam and virus protection instead of Postini's. When using the Google Apps platform with non-Gmail mail servers, users can manage spam using the Quarantine Summary and the Message Center.

Quarantine Summary
The Quarantine Summary is comparable to what users experience with Postini today. It is a digest that lists all messages that were marked as spam. It is delivered to users in their inbox and enables them to identify a message as not spam and deliver it to their on-premise inbox.

Message Center
The Message Center is a web-based console that enables users to manage their spam messages. Like the Quarantine Summary, users can identify a message as not spam and deliver it to their on-premise inbox.

Note: Spam messages are stored in the Apps platform for 30 days, while Postini typically stores messages for 14 days.

How does virus protection work with Google Apps?

Google Apps provides comprehensive virus protection. Like Postini, Gmail utilizes two virus filtering engines for all messages, and virus protection also includes the following:

  • Messages that have executable file attachments are automatically rejected, even if those files are compressed into another file, such as a zip or rar file. We do this for many types of executable files (see Some file types are blocked).
  • Messages are automatically rejected that contain a password protected zip file within another zip file.
  • Every attachment is automatically scanned when it's received, and messages that contains viruses are automatically rejected.

Additionally, Google provides increased protection against phishing-based attacks and messages containing URLs that point to malicious sites. For more information, see How Gmail spam and virus filtering differs from Postini.

What does it mean that my Postini Admin Console will be in read-only mode during my transition?

When you click Begin Transition Now in the Transition Console, your Postini Admin Console will be switched to read-only mode. This means you can still log in to the Admin Console and view your settings, but you cannot make any changes. Mail flow and filtering will not be interrupted during this time.

Later, when you receive confirmation that your service transition is completed, you can log in to the Google Admin console to view the email settings that were moved over. (See Admin checklist: Getting started with your Google settings.)

How do I know if my firewall is set up to allow Google Apps mail?

Your firewall must be configured to allow email from both Postini and Google IP ranges. If you configured your firewall a long time ago, it may be open to Postini IPs but not yet to Google IPs. (If you never locked down your firewall in the first place, you may not need to make changes to your firewall configuration.)

For instructions, see Allow email from Google IPs to your email server.

What should I do if the Transition Console tells me I cannot proceed because my firewall is not open?

If your firewall is set up to only allow email from Postini IP ranges, and not from Google Apps IP ranges, you’ll receive an error message when you click Begin Transition Now in the Transition Console. The error message will let you know that your firewall is not open to Google. To correct this, you’ll need to add Google IP ranges to your firewall configuration. For instructions, see Allow email from Google IPs to your email server.

Note: Once you make the changes to your firewall configuration, you’ll need to return to the Transition Console to initiate your transition.

What does Postini passthrough mean?

With Postini passthrough, Postini settings do not take effect, and instead mail is "passed through" to Google Apps. Postini is in the passthrough state for Classic customers after you click the Begin Transition Now button and for Hybrid customers after you click the Finish Transition button in the Transition Console. Your filtering will then occur in Google Apps instead of Postini. Your mail flow continues without interruption during this process.

During my service transition, will I be able to transition individual organizational units rather than transition my entire domain?

By clicking Begin Transition Now, you’ll transition all of the orgs, settings, and users for your account to Google Apps. You cannot transition from Postini to Google Apps on an org-by-org basis, but we are considering adding this capability in the future.

Note: The transition process is slightly different depending on whether you're a Postini Classic or Hybrid customer. See Transition steps for Postini Classic customers and Transition steps for Postini Hybrid customers.

In my Postini configuration, I had one account org, one email config org, and one user org. Why do I see just one organizational unit in the Google Admin console after my service migration?

If your Postini configuration includes just one account org, one email config, and one user org, you will see just one organizational unit (OU) in the Google Admin console when you first log in. In Google Apps, the account org and email config org are not necessary, so the org structure will be simplified for you. If needed, you can add sub-organizations. See Create an organizational structure.

What type of reporting tools are available in the Google Admin console?

There are many different reports currently available in the Google Admin console, and you can find a description of them here. Additional reports are on the roadmap that are similar to what Postini offers.

How long will it take to complete my service transition?

The transition time varies depending on the number of users included in the transition, and can range from a few minutes to several days.

Will dual-delivery and split-delivery configurations be automatically transitioned from Postini to Google Apps?

Mail routing configurations will be automatically transitioned to Google Apps during the service transition; however, in some cases manual configuration will be needed, and Google will assist these customers to complete their transitions.

Postini has a "black hole" feature for spam filtering that reduces the amount of spam a user needs to look through to find valid messages. Does Google handle spam in the same way?

Google Apps email filters block blatant spam just like Postini, and questionable messages go into the Spam folder. Non-Gmail users can use the Quarantine Summary and Message Center.

What are the recommended settings for split delivery using Google Apps email filters?

See Mail routing and delivery: Guidelines and best practices, and click Routing examples and use cases.

Do you provide Transport Layer Security (TLS)? If yes, do you provide both forced and opportunistic TLS?

Yes, Gmail uses "opportunistic" TLS, which means it will attempt to use TLS whenever possible.

You can also configure TLS compliance policies to require TLS when communicating with specified external domains. If TLS is not available for the domains defined, inbound mail will be rejected and outbound mail will not be transmitted.

Do you provide message tracking for both inbound and outbound mail? What’s the lag time?

We do provide audit logs and message tracking logs. Google has a delay that is guaranteed 1 hour or less.

Do you have an Outlook plug-in? Are there any compatibility issues? What are the installation methods?

You can use any POP or IMAP clients such as Outlook or Thunderbird. We also have a sync tool for Outlook called Google Apps Sync for Microsoft Outloook (GASMO).

Note: If you're a reseller customer, please reach out to your reseller directly for questions regarding your transition. Google Cloud Support is available to assist you once you've been invited or have begun your transition.
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