Frequently asked questions
If you try to send an email and then receive an email in return with the subject:
Mail delivery failed: returning message to sender. It means the email was not delivered.
This return mail contains a lot of technical information, but if you know what to look for, you can easily find out the reason to why it was not delivered.
This is an example of such an email:
This message was created automatically by mail delivery software. A message that you sent could not be delivered to one or more of its recipients. This is a permanent error. The following address(es) failed: email@example.com SMTP error from remote mail server after RCPT TO:
: host mx04.domeneshop.no [2a01:5b40:0:2204::1]: 553 5.3.0 ... No such user here------ This is a copy of the message, including all the headers. ------ Return-path: Received: from [2a01:5b40:0:253::24] (port=64430) by smtp.domeneshop.no with esmtpsa (TLS1.2:DHE_RSA_AES_128_CBC_SHA1:128) (Exim 4.80) (envelope-from ) id 1bRcGB-0006Jf-RM for firstname.lastname@example.org; Mon, 25 Jul 2016 11:33:15 +0200 To: email@example.com From: Ola Nordmann Subject: test Message-ID: <firstname.lastname@example.org> Date: Mon, 25 Jul 2016 11:33:13 +0200 User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:45.0) Gecko/20100101 Thunderbird/45.2.0 MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 7bit
We have marked which server submitted the error message and what the error message is, in the color red.
This line tells you which server submitted the error message:
host mx04.domeneshop.no [2a01:5b40:0:2204::1]
This line is the error message itself.
... No such user here