Continued Issues with Sending Emails to Gmail - Error: 550 5.7.350

We are currently facing difficulties sending emails to Gmail addresses, consistently receiving the following error message: "Error: 550 5.7.350 Message rejected by: mx.google.com." Despite logging multiple tickets in the past two weeks, the issue persists, and we have not yet received a resolution.

To provide some context, our organization recently underwent a migration from Exchange to Office 365. During this transition, we took the necessary steps to ensure that our SPF and DMARC records are correctly configured on our DNS portal. Despite these measures, the problem with sending emails to Gmail addresses persists.

We understand the importance of a smooth email communication process and the impact this issue may have on our business operations. Therefore, we kindly request your assistance in resolving this matter as soon as possible.

Here are some additional details that might aid in your investigation:

  • Our domain: cishefei.com
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