If you're receiving this error, it means that the mailing list is really bad or it is possible that the account is compromised.
What can I do to resolve this?
Here are some steps you can take to clean up the email coming from your account:
- Secure your account against compromise by spammers:
- Change your password. Ensure your new password has a minimum length of eight characters and uses a mixture of upper and lower case letters, numbers, and special characters.
- Verify that your operating system is running with the latest security updates.
- Update your anti-virus software and conduct a full scan of your system to ensure that a spammer has not installed spam-sending malware on your computer.
- Change your password. Ensure your new password has a minimum length of eight characters and uses a mixture of upper and lower case letters, numbers, and special characters.
- If you have recently sent a newsletter or other type of mass mailing from your account, verify that none of the URLs within your messages have been flagged by anti-spam systems. Use the Trusted Source URL check to check a URL or domain's reputation. Generally speaking, make sure you are following best practices when sending a bulk campaign, such as using an opt-in only mailing list.
- Sanitize your mailing list and ensure you are sending mails to only receivers who have opted in to receive your mail.
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