550 Requested action not taken: mailbox unavailable or not local

.net email sendmail mail-server
timothyclifford picture timothyclifford · Oct 4, 2010 · Viewed 16.8k times · Source

Have set up a small website for a client however contact form submissions are not getting through to their email address.

The bounce back has this message attached: 

550 Requested action not taken: mailbox unavailable or not local

It sends without issue to my email address and others but can't get to any on their domain.

Client's IT guy is a bit clueless so I'm unsure how he's configured the mail server?

Answer

Hans Olsson picture Hans Olsson · Oct 4, 2010

You're probably sending the emails to an incorrect email address, or possible the emails are being sent to the http server for the domain (or similar) but the SMTP server is hosted elsewhere.

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