Reply To: Regarding Mails

Good you said that the header is correct. Just looked at that and thought it’s correct.
That’s really wired.

Just found out there’s a Reply-To header. Shame over me. But I never saw it in another code either.
But that’s really cool, because I can enable that the mails to admin come from the admin itself to 100% come on, but the reply is to the user. I was afraid that some mail wouldn’t come on if the guest has a wrong/spam email.
And your problem should be fixed too.