aliwilton

Same issue here. Installed and activated this plugin and it does not appear anywhere in my admin menu. I am running WordPress 4.4.4.

OK, did some deeper digging into these forums and it looks like this is the explanation/remediation:
https://www.ads-software.com/support/topic/contact-7-config-erros?replies=7

I was not the person who did the CF7 plugin upgrade, otherwise I would have declined it upon realizing this change.

I have the same issue. It looks like the latest version of CF7 is requiring that the “From” address match the domain of the site. It is throwing an error on every single one of my forms that reads: “This email address does not belong to the same domain as the site.”
However, this is not always logical, for example, in the case where I want the submission notification email to come to our company and the person who submitted the form’s email address in the “From” field. I am not sure why this change would have been implemented, as it has undoubtedly rendered hundreds of users’ forms unusable.

Can someone from CF7 please let us know how to get around this limitation, or if not, provide us with a previous version of CF7 in which this was not an issue?