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Whitelisting/Blacklisting BATV and VERP addresses

Dominic -

PROBLEM
How can I Whitelist or Blacklist BATV and/or VERP addresses?

ENVIRONMENT

  • atmail 7 cloud

CAUSE
In an attempt to mitigate backscatter, mass-mailing applications like MailChimp, SendGrid and Mailgun may use Bounce Address Tag Validation (BATV) to determine the validity of a specified bounce address within an email. Within the <local-part> of the  Mail From: field, BATV denotes the use of a tagging scheme that allows bounced mail to be assessed for validity and dropped accordingly. An example of an address using BATV may appear as follows:

  • Mail From: <bounces+22456-c23af-user=domain.com@domain.com>

While BATV validates bounces, Variable Envelope Return Path (VERP) is implemented by mailing lists to automate recognition and removal of in-valid recipients.

The combination of these mass-mailing techniques can ultimately effect the approach towards implementing Whitelists and Blacklists to govern what mail reaches your INBOX.

 

RESOLUTION

Target the <domain-part> of the email address by adding it to either your Whitelist senders or Blacklist senders, available from: Settings -> Anti-Spam Settings.

For example, to Whitelist:

  • <bounces+22456-c23af-user=gooddomain.com@gooddomain.com>
  • <bounces+27776-h2345a-user=greatdomain.com@greatdomain.com>
  • <bounces+49733-m345s-user=best.domain.com@best.domain.com>

    while Blacklisting:

  • <bounces+92686-l266b-user=baddomain.com@baddomain.com>
  • <bounces+10636-k4473-user=evildomain.com@evildomain.com>

    Please find the following example:

 

Screenshot_from_2017-03-01_16-14-38.png

Remember to click Save Settings to push your new changes to your profile on our cloud.

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