Hi Richard, On 01-09-17 15:13, Richard Barker wrote: > I use these to get the info then insert in the domain txt file > https://www.spfwizard.net/ > https://www.unlocktheinbox.com/dmarcwizard/ > https://luxsci.com/extranet/dkim.html And how do you enable sendmail to use this information? Kind regards Maurice