PHP Emailer invalid DKIM

Webmin Version: 1.941
Virtualmin version: 6.08

Hi Forum,
I’ve managed to get DKIM working for my domains with 10/10 score with but when using my software using PHP Mailer I get invalid DKIM from

Also the bounce email address is:
How / where is it using this email address…? I’ve set my PHP to use

Can anyone point me in the right direction…? Much appreciated


Have a look here.

Thank you very much for your reply, I’ll have a look a little later when work has died down