550 Requested action not accepted: mailbox not available or not local

We have arranged a small website for the client, however, messages with the contact form do not reach their email address.

Bounce back has this message:

550 Requested action not taken: mailbox unavailable or not local

It sends without problems to my email address and others, but cannot get to any domain.

Client The IT guy is a little stranger, so I'm not sure how he set up the mail server?

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2 answers

A problem was discovered that the web server has the maximum records, which means that it was trying to send mail to itself, and not to an external mail server.

DNS .

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, , , http ( ), SMTP .

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Source: https://habr.com/ru/post/1767861/


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