Topic: Recipient address rejected: User unknown in virtual mailbox table
Hello, I have a bizarre problem, I can send emails from iredmail smoothly.
I can receive emails from gmail, yahoo, hotmail, exim, qmail without problems BUT if I send a mail from another postfix, I get the following error
An error occurred while sending mail. The mail server responded: 5.1.1 <firstname.lastname@example.org>: Recipient address rejected: User unknown in virtual mailbox table. Please check the message recipient email@example.com and try again
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