I'm using Contact Form 7 and it works fine when I'm using an external mailaddress (email@example.com for example).
But not a e-mail address with the same domain as the website (@mydomain.com).
I am using zoho mail for my e mails (I contacted zoho but they said it was not their issue). Could using an external email sevice (the mx records are pointing to zoho) be causing the problem? Or could the problem be caused by somethning else?