The recipient’s email server blocks inbound mail from the sender’s server, which may be due to blacklisting. A mail block is recorded when the receiving server blocks an email completely, rejecting the message without any attempt to deliver it to the inbox.
The reasons for this block are:
- Your reply-to address is blacklisted
- One of your sending IPs is temporarily blocked
- One of your sending domains is temporarily blacklisted
- The receiving server only accepts white-listed senders
|Note: You can resend an email only if the above issues are resolved. Please contact us at firstname.lastname@example.org for more information.
To know more about Email Bounces and Error Codes, click here