SMTP Mail is Finicky
This is an interesting issue. I can send mail using the Mail Users form, but cannot receive mail using the Contact Us form if the e-mail field (From: field) is not filled with the admin address.
For now, use firstname.lastname@example.org in the e-mail field and put your e-mail in the Subject field if you have to use the Contact Us form.
Ami Sapphire on September 18, 2010 2:56 PM