My Email got blocked on some Domains and I am looking for a solution -- 2

Job ID: 37129855

Budget: $10 – $30 USD

Project Description:

I am currently facing an issue where my email is being blocked on some domains. I am looking for a solution to resolve this problem.

Email Service Provider: Gmail

Domains Blocking Emails: Yes, some of them are known.

Access to Bounce-back Emails or Error Messages: Yes, I have access to the bounce-back emails or error messages received.

Skills and Experience Required:

- Experience in troubleshooting email deliverability issues on Gmail
- Familiarity with identifying and resolving domain blocking issues
- Knowledge of email authentication protocols such as SPF, DKIM, and DMARC
- Ability to analyze bounce-back emails or error messages and provide appropriate solutions
- Strong communication skills to effectively communicate with domain administrators and resolve the blocking issues.

I have tried to create a new Google Workspace account, but it did not work.
I have tried to create a "private Email" namecheap.com, but it did not work. -> I received this error: "500:OpenXchange Expcetion: Authentication failed; exceptionId -919491060-58; Invalid response from Provider while getting domain information."

I think that a competitor killed my mail. I still own the domain, but what can I do now except of google workstation?
Related categories: System Admin Linux Web Security DNS Email Handling