KNOWLEDGE BASE

Subscription Emails for Tableau Online Delayed by 15-30 Minutes Using Mimecast


Published: 25 Feb 2020
Last Modified Date: 02 Mar 2020

Issue

Subscription emails in Tableau Online are delayed by 15-30 minutes, and are not received immediately upon being sent from Tableau Online.

Environment

  • Tableau Online
  • Mimecast

Resolution

Work with your IT team to create a greylisting bypass policy in Mimecast for mail sent from @mandrillapp.com. This will result in the subscription emails not being delayed.
 

Cause

Tableau subscription emails are delivered via a third party service @mandrillapp.com, which generates random unique sender addresses. Mimecast applies Greylisting to the unique sender address upon initially receiving the email from Tableau, when Mimecast hasn't seen the combination of envelope address, recipient address, and sending IP before. Tableau will attempt to send the email again after being rejected by Mimecast the first time, but it is accepted the 2nd time, as the combination is recognized from the first attempt, resulting in the delayed email being delivered.
 
Did this article resolve the issue?