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Question 550 Requested action not taken: mailbox unavailable (in reply to RCPT TO command)

X

Xavier

New Pleskian
Hi
I have set up a second domain with different ip address. Sending emails from this domain works not always. In some cases I get a undelivered mail with following message:

550 Requested action
not taken: mailbox unavailable (in reply to RCPT TO command)

The notification comes from first domain for somehow, that this email cannot be sent. It should come from second domain but not from first domain.

What is wrong here?
 
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