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550 Requested action not taken: mailbox unavailable or not local


How to fix “550 Requested action not taken: mailbox unavailable or not local” in Plesk servers

How to fix “550 Requested action not taken: mailbox unavailable or not local” in Plesk servers

Mail errors are commonly encountered issues in our role as Website support specialists. In Plesk Windows servers, the default mail server is MailEnable.

Plesk account owners sometimes report the MailEnable error ‘SMTP server response: 550 Requested action not taken: mailbox unavailable or not local’ when trying to send out mails or when managing their account functions through the Plesk panel. (more…)