I also have CF7 4.2.1 running on a user-installed WP ver 4.2.2 using a recently ported GoDaddy Cpanel instance. Am not sure when the form stopped emailing though do know it was sometime after 6.24.2015. Since I am a shared host instance, I don’t have access to MAILDIR, I don’t think, so I have no idea how to recover any emails that didn’t go. Our season is cranking up and I need to fix this so appreciate any troubleshooting steps anyone can share.
Eric
BCCSings.org