R=fail_remote_domains: The mail server could not deliver mail to

• 22 October 2021
• in: Email

When making an attempt to send emails from the server, you receive a bounce back as below.

“R=fail_remote_domains: The mail server could not deliver mail to. The account or domain may not exist, they may be blacklisted, or missing the proper dns entries.”

Although the server IP OR domain isn’t blacklisted, bounce back shows it to be blacklisted.

Workaround is to change the resolvers and set them as following.

nameserver 8.8.8.8

nameserver 4.4.4.4

Now you can try sending emails . Emails are going to be delivered properly.