Hello, Has anyone encountered the error message “Permanent Failure: Other or undefined mailbox status” when trying to send an email through NetSuite, even though the email address is valid and can receive emails sent from outside of NetSuite?

AI generated answer (using internal Slack threads):

Based on the conversations, it seems that the error message “Permanent Failure: Other or undefined mailbox status” can occur due to several reasons. One of the common reasons is the failure of DKIM setup in NetSuite. DKIM (DomainKeys Identified Mail) is an email authentication method that is designed to detect email spoofing. If it's not properly set up, it can cause email delivery issues. Another possible reason could be related to the recipient's email server. For instance, if the recipient's email server uses a spam blocker that has marked NetSuite as spam, it could block emails sent from NetSuite. In one of the threads, a user mentioned a similar issue where a third-party spam blocker called "Proof Point" had marked NetSuite as spam, causing emails to be blocked. To resolve this issue, you might need to check the DKIM setup in NetSuite and ensure it's correctly configured. If the issue is related to the recipient's email server, you might need to contact the recipient and ask them to whitelist NetSuite in their spam blocker. Please note that these are potential solutions based on the information available in the conversations. The actual solution might vary depending on the specific circumstances of the issue. ****** Disclaimer: This response was generated by an artificial intelligence assistant based on previous conversations from multiple Slack channels, and may contain inaccuracies or mistakes. ******