[clug] Debugging mail delivery issues

jm jeffm at ghostgun.com
Fri Apr 19 03:53:30 UTC 2019

On 19/4/19 10:30, Scott Ferguson via linux wrote:
> You don't 'need' DMARC, but you 'should' have DKIM - which you don't.
> Hence your problems with mimecast.com, I'm surprised you haven't had
> problems with runbox or gmx also.
Added DKIM as you suggested. Is there a service out there I can email
and get a report it's working?

mxtoolbox reports a valid DNS record. Emailing myself shows the email is
signed. So, fingers cross it's all correct.

> dig is a good tool for checking DNS records, as is mxtoolbox tools:-
> https://mxtoolbox.com/NetworkTools.aspx
> You may also find this useful:-
> https://tecadmin.net/setup-dkim-with-postfix-on-ubuntu-debian/

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