Emails rejected when using Contact Us form

On several district websites us FreeToastHost, they have a Contact Us form. When emailing them using that form I get this message.

An email security check failed during email processing.

(DKIM Signature Verification: fail (message has been altered))

Emails failing security checks may be blocked in the future.
If you have any questions about this, please visit support.toastmastersclubs.org .

Am I doing something wrong?

Frank

We can't help without knowing the club, club number or district number of the FTH site you are using...

You cannot use toastmastersclubs.org as a sending email address. You need to use your gmail address.

d32.toastmastersdistricts.org/#null

d9.toastmastersdistricts.org/#null


d63.toastmastersdistricts.org/#null

same comment

You cannot use toastmastersclubs.org as a sending email address. You need to use your gmail address.

I lo into D9, D32 or D63 website and use their Contact Us for to send an email to them.

I did not understand your reply. I'm not using my email to send but their email form.