Message bounced due to Bulk Sender

When sending an email to a group in Google Apps, I get, 'Message rejected by Google Groups. Please visit http://support.google.com/a/bin/answer.py?answer=168383 to review our Bulk Email Senders Guidelines.'

Google has many procedures put in place designed to protect the integrity of our system and fight spam.

We have additional procedures in place to protect messages sent to groups, as groups are more vulnerable to large-scale spam attacks.

If you received this bounce-back message, it typically means that the sending IP address from which the message was sent has been identified by past Google user reports are sending some spam-related traffic.

Here are general best practices that we recommend to help protect your domain against spam, while ensuring that intended traffic delivers to your users:

  1. Add trusted sender's IP addresses into the Email Whitelist section at the following page:

    https://admin.google.com/AdminHome#ServiceSettings/service=email&subtab=filters

    An email whitelist is a list of IP addresses that you deem acceptable for sending mail to your domain and should not be labeled as spam. At this time, this feature is available only in Google Apps for Business. If you notice that legitimate emails from specific contacts are incorrectly marked spam, you can whitelist the contact's IP address. Once you whitelist the IP address, message originating from this IP will no longer be marked spam. Learn more

  2. Publish an SPF record that includes Google's as well as Postini's information (if you have activated the Postini Services). For more information, please visit the following site.
  3. Ensure that your Inbound Gateway field is properly populated.
  4. In your group's settings, change the spam controls setting to allow messages suspected as spam. Note that doing so may cause an influx of spammy messages.

If you have activated Postini services, we recommend adding the Postini sending IP ranges, 64.18.0.0/20,207.126.144.0/20,74.125.148.0/22, 74.125.244.0/22, into the Inbound Gateway field at the following page:

https://admin.google.com/AdminHome#ServiceSettings/service=email&subtab=filters

If your domain's MX records point to any other servers besides the Google Hosted servers, please enter the sending IP ranges from these corresponding servers into the Inbound Gateway field.

To review your MX records, please visit the 'Checking the MX records for your domain' section in the following article: Configuring email delivery

Please follow all of these steps to ensure that mail delivery is working as efficiently as possible. If you continue to experience problems with this Bulk Senders issue, consider opening (or "whitelisting") your group to potential spam. See Legitimate mail to group in moderation queue as spam.

See Bulk Senders Guidelines for more information.