Hello,
I am unable to send a test email to a same-domain-email-address in ACYMailing.
Example: If my domain is xxyyzz.com and I send a test email to an email account email@xxyyzz.com through an in-house server (not Office 365) it does not send. BUT, if I create a hosted email account received@xxyyzz.com it works fine. The email@xxyyzz.com works fine otherwise, standard email sending and receiving.