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redjun

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I am having problem with clients that were not able to send mails to my domain.

Where could be the problem? Below is the error message.

.......................
The following message to <logistics<_at_>mydomain.com> was undeliverable.
The reason for the problem:
5.4.7 - Delivery expired (message too old) '[Errno 54] Connection reset by peer'
........................

Thanks in advance.
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TorW

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That error message is likely just the final error after a long series of delivery attempts. I.e., the sending server removed the mail from its outgoing queue after a certain period of time. Standard functionality. WHY it couldn't send it is another matter.

Do you have an MX record for your domain? Can other servers deliver to you? Can your mailserver send mail? Are you blocking this particular MTA for some reason?

Also: please don't use mydomain.com, domain.com, test.com or any other real domain when you (often for no good reason) obfuscate log snippets. Use example.com. It's set aside specifically for demonstration and documentation by IANA.
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