I am having the common problem that others seem to be having with the message, "Failed to send your message. Please try later or contact the administrator by another method."
Mine comes in red when I try to submit a test message. I have installed "WP-Mail-SMTP" and sent a test email with WP-Mail-SMTP and received it with no problem.
My web host is iPage.com. Asked them if they could help. No go. Said the server is off of Linux.
I have deactivated Akismet to see if that was the culprit, but still nothing.
Any help is greatly appreciated.