Send Mail Error Amzon Workmail

Question

Dear AWS team and friends. I'm having problems using Amazon Workmail to send mail. Currently, when I send mail to a fixed email address, I do not receive outgoing mail information. The error code information is as follows:

Diagnostic-Code: smtp; 550 you are not allowed to send mail.
Status: 5.3.0. What could be the reason please help me.

I went to this Personal Health Dashboard but I don't see any recent issues and what could be the problem?
My current problem is that I send mail to many different mails, there is 1 fixed email address in which I do not receive mail information.
I have checked that email address it is valid.
I have checked that email address in the Suppression list, but I don't see that mail is restricted.
What could be the reason, please help me.

Thank you.

Gary Mclean · Answer

Sounds like issue with the **reciever** email system not liking something. 
Resending the email will not help. The reciever email administrator should be able to inform you why.

Theres something deeper thats causing the email system not to accept your email. I dont believe theres anything on the AWS side to cause this

5.X.X
A permanent failure is one which is not likely to be resolved by resending the message in the current form. Some change to the message or the destination must be made for successful delivery.

x.3.0
The destination system exists and normally accepts mail, but something about the system has caused the generation of this DSN.

Send Mail Error Amzon Workmail

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