hi @ocio132, first of all I have to say thank you for your feedback
I’m guessing you’re using email from the same domain as the website, this is a common way that scammers use to get around spam filters. So, one of the antispam filters takes care of denying emails that have certain strings, in this case the exact match of your website domain.
Try using a different email address when trying the contact form or from the Antispam for Contact Form 7 configuration WPmenu > contact form 7 > antispam
disable “Bad email strings”.
Also from the same page at the end you should see the list of banned ip’s, if there is yours ip address remove it
If you are still having problems and you are using Flamingo, you can navigate to WPmenu > flamingo > inbound messages > spam
and check in the status box (top right) why the email was marked as spam.
Let me know if has worked! Erik