You receive the following error message after sending an email message:

This message could not be sent. Try sending the message again later, or contact your network administrator. The client operation failed. Error is [0x80004005-0x80004005-0x000501].

There may be network connectivity problems on the client end preventing a successful, reliable connection to the email servers.

Perform general email client troubleshooting and network connectivity troubleshooting on the client to rule out any possible problems.

Outcome

You will be able to send email successfully.

You may wish to try sending the message from another computer or from Outlook on the web.