Email Bounceback Explanation

When you receive an "5.7.1 Email from your domain is not accepted for this recipient" bounceback, it indicates that the email server of the recipient has blocked your message because the sender's email address was detected as coming from a free or disposable email service provider (FDEP). These services include hotmail.com, aol.com, outlook.com, and gmail.com.

Key Points:

• Reason for Bounceback:
• The recipient’s server has policies in place to block emails sent from FDEPs due to their common use by spammers, scammers and hackers. 
• This helps significantly reduce the amount of unsolicited email (spam) reaching their inbox.
• There's no justification for genuine businesses to use FDEPs any more. 

• Recipient's Action:
• When you send an email, the recipient's server checks the sender's email address against a list of known free and disposable email providers.
• If your sender’s address is from one of these FDEPs, the server blocks the message to prevent potential spam and reduce risks. 

Practical Steps:

1. Verify Your Sender Address:

• Ensure that emails are being sent from a verified business or professional email address (e.g., example@yourcompany.com) rather than a personal Gmail or Hotmail account.
• Use a dedicated domain for sending business emails to maintain credibility and avoid such bouncebacks.

1. Contact the Recipient Directly:

• If you need to send important business correspondence, follow the advice in the bounceback message and contact the recipient by phone or using an alternative verified address (as indicated in the "in reply to end of DATA command").

1. Review Email Content:

• Ensure your email content is professional and relevant to avoid being flagged as spam.
• Avoid using overly promotional language, excessive capitalisation, or frequent use of exclamation marks.
• If you are sending bulk emails, consider subscribing to a feedback loop service provided by some ISPs which will notify you if your email is being blocked for any reason.
• This can help in identifying and fixing issues before they become widespread problems.

By following these steps, you can significantly reduce the likelihood of receiving bouncebacks related to FDEP sender addresses.

Further Assistance

If you do not have a verified business or professional email address, GEN can provide one for less than £20 annually for a single mailbox with your own company domain, and we are just one of many companies offering such a service. 

https://www.gen.uk/index.php?page=Services&option=Email

Use the contact Us form and someone will guide you through the process of selecting a domain name, and setting up your email.