One common error you can get when sending email is the “550 No Such User here” error. This error occurs when the sending email is rejected because the username cannot be found or is not accessible by the server. There are several reasons why you would get a “550 No Such User Here” error.
- Mail file permissions are not readable or are incorrect.
- The email address was typed incorrectly.
- MX records are incorrect [ pointing to the wrong server ].
- Email does not route correctly [ Remote / Local domains ].
This error can go both ways, meaning, people sending to your server may get the error and when you send from your server to another you may get the error. Depending on where the error bounce is generated from will determine what you can do about fixing the error.
If you get “550 No Such User Here” bounces sending from your server to another server, you most likely will need to contact the host or email administrator of the server you are emailing to fix it.
If you are getting complaints that people sending to your server are getting this bounce, you can check / change the settings on your servers end. Below are the reasons why the 550 error may occur when you email.
Mail file permissions are not readable or are incorrect
All our servers store email in the “mail” directory of the “home” folder of your cPanel account. If the file permissions are corrupted [ sometimes caused by server moves, back up restorations, or recently uploaded files through FTP, etc.] you will get this error for all your emails. This is a simple fix. You can contact tech support to have the file permissions fixed on your server. On VPS and Dedicated servers, you can run the following from command line:
[root@vps#### ~]$ fixperms userna5
This will reset all your file and folder permissions to folders 755 and files 644 for the cPanel user userna5. If the email bounce is coming to you when you send to another server and it’s permissions related, the person you are emailing will need to contact their hosting provider to fix the permissions on their end.
The email address was typed incorrectly
“550 No Such User Here” Errors can occur when the email address you are sending to is typed incorrectly. In this case, just make sure you have the email address spelled correctly.
MX records are incorrect [ pointing to the wrong server ]
If you recently moved your domain to InMotion Hosting and you started receiving these errors, you may have a DNS nameserver or MX record problem. The MX records point your email address to a specific server. If the MX record is pointing your domain to the old hosting company and you removed all your email accounts off that server, when you go to send your email, you will get the “550 No Such User Here” error. You will want to check the following through command line:
[root@vps#### ~]$$ dig example.com mx ; DiG 9.8.2rc1-RedHat-9.8.2-0.10.rc1.el6_3.6 example.com mx ;; global options: +cmd ;; Got answer: ;; ->>HEADERHEADERHEADERHEADER