[clug] Debugging mail delivery issues

[jm]

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/
>