Ibrahim Sharif

Hello Haroon,
The link to that part is auto-generated from WordPress URL settings. I guess you have migrated from a localhost development site but the site URL is not updated yet. Otherwise, it might be hosted locally with localhost.

Could you confirm this information and let us know any other relevant information, please?

Hello Saugata,

Could you please create a support ticket from https://wpmanageninja.com/support-tickets/
The team will help you.

Hello Bestinla,
You need to verify both sender and recipient email addresses from AWS SES Dashboard.

Hello Maxmle,

You are welcome!
If you do not send bulk emails or have too low a volume to send from your website you may use the shared email account.

I would recommend using AWS SES type delivery provider for Transactional Emails for your website which also supports multiple authentications for multiple websites for the same email or domain.

This type of issue comes if you are using an admin account that does not have a mailbox. Other than that, the error also comes if your account does not have an Exchange Online mailbox.
If you have a valid Exchange Online Mailbox and your account is not an admin account then you can contact Microsoft regarding this as the error comes from their end.