Apple Mail The recipient “” was rejected by the server.

The error message is “A copy has been placed in your outbox. The recipient “” was rejected by the server.

If you receive the following error message above on your Apple Mail app.

Please follow the steps below:

Go to Settings --> Mail, Contacts, Calendars.

Tap on your Mailbox Name on the right side.

Now tap once again on your mail box email address


Tap on the SMTP >


Tap on:  On >

Now enter the same username and password as your incoming mail server in the user name and password field, where it states optional.

Now tap on Done to save changes.

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