To investigate the cause of the problem, consult the log files of your VPS. For Postfix this can be done with the command:
tail -f /var/log/maillog
For Exim use the command:
tail -f /var/log/exim_mainlog
Please note that some control panels may use different locations for the log files. In that case, check the file location using the commands:
ls /var/log ls /var/log/eximls /var/log/postfix
Below is an overview of articles explaining various error messages you might encounter when using the mail service (but with a misconfiguration).
- No valid 'x-transip-mail-auth' DNS record found for <hostname>. Please see transip.eu/knowledgebase/entry/349 for more information.
- SPF records for <hostname> have not been configured correctly . Please see transip.eu/knowledgebase/entry/350 for more information.
- DKIM records appear to be not configured correctly for <hostname>. Please see transip.eu/knowledgebase/entry/351 for more information.
We will continue updating this article with additional errors you may encounter and their solutions. Should you experience a problem for which you couldn't find the solution in this, or the linked articles, please let us know by leaving a message under 'Comments' at the end of this article, or by sending a message through your control panel to our support department.