Home  >   FAQs   >  What is a challenge or response bounce?

What is a challenge or response bounce?

Table of Contents
The recipient has installed software as an anti-spam measure that only accepts email from previously authorized senders. If the software does not know the sender, a challenge email is returned, requiring a specific action before the original email is sent to the recipient.

To know more about Email Bounces and Error Codes, click here.
Was this FAQ helpful?
0  out of  0  found this helpful.
Comments 0
Be the first to comment
© Copyright 2022 Vtiger. All rights reserved.