<< More Tips   |   Added On: 17/12/15   |    Category: Linux    |    Number of Views: 1047

Mail delivery failed: returning message to sender. No Such User Here

I recently ran in to a problem with email after moving a website away from my reseller hosting to some new hosting. After the domain name had fully propagated I set up the new email address.

To ensure the new email address was working correctly, I sent some emails from my other email accounts that I hold on Google and GMX. Everything appeared to work correctly, I could send and also reply from the new email address.

I then sent some test emails from other accounts that are hosted on my reseller hosting, which is where the original website was hosted before I moved it.

I sent the email using Rouncube which is a standard webmail client for Linux Hosting. As soon as I sent sent the email, it was immediately returned with the following error message
Mail delivery failed: returning message to sender. No Such User Here.

It left me wondering why this was happening since all the emails I had previously used to send from gmail and gmx worked, but why where they not working from this server?

I later concluded that I had not deleted the old account from the reseller hosting, so obviously when I sent an email using Roundcube on the same server, the email address was still set up and hosted on the old site. After I deleted the old account, I then sent another email and this time it worked.

If you ever run in to this issue, this could be one of the reasons.

Linux Services

Buy Linux CDs, DVDs, USB Flash Drives from OSDisc.com

Buy Linux CDs, DVDs, USB Flash Drives from OSDisc.com

Run Windows software on Linux

Run Windows software on Linux with Crossover Office