I am getting an Error 550 5.7.1 Unable to Relay while using Microsoft Exchange 2013. Exchange throws this error message whenever I try to send or receive emails from the Server. I am unable to troubleshoot the issue after searching for the solution for hours. I don’t have any idea why I am getting this Exchange 2013 SMTP error 550 5.7.1 Unable to Relay. Can anyone please tell me why this issue occurs?
In this error, the first digit of the code describes that if the Exchange Server accepts the command, encounters any activity or begin any suitable activity. If any syntax or connection error occurs, then they are displayed using these subsequent error codes. Like all the errors in MS Exchange, there are multiple factors which can be responsible for error 550 5.7.1 Unable to Relay in Exchange 2016, 2013, 2010:
Multiple restrictions are imposed on the Sender’s Domain in the Recipient’s policy by the receiver domain.
When the Outgoing mail doesn’t recognize the sender.
If the authentication fails for the sender domain.
Corrupted Exchange database could be another reason.
Thanks for the reply. This means there are multiple factors which are responsible the error. Now, if I want to rectify the issue, can you please suggest me some method using which I can solve the issue as my email communication has come to a halt.
Thanks & Regards
Thanks for the solution. I implemented all the steps that you explained but I am still facing the issue. I think my Exchange database file is damaged and it needs to be repaired. Is there any method using which I can remove corruption from the DB file as I am not able to access my mailbox data and also can’t send and receive emails. My work is getting hampered. Can anyone please provide any solution for it?
Thanks & Regards
As you told that your Exchange database is damaged and you are getting the SMTP error 550 5.7.1 Unable to Relay in Exchange 2013. Then, you can use a professional solution i.e. a third party application to export EDB mailbox to PST format. Using this software, you will be able to repair even the highly damaged Exchange DB files with ease.
This solution will help you to solve your issue whether you are using Exchange 2016, 2103, 2010 or other lower versions of it.
Thank your for providing the solution Kerry Morris. I used the application which you mentioned and after using it, I successfully managed to transfer my mailbox data to Outlook data file format. Then, I accessed that data in it and continued my email communication.