For some reason, my wordpress site (www.rain.works) appears to fail at sending any emails to email addresses that end in a non-traditional domain extension. I discovered this while trying to send a Woocommerce invoice to an @rain.works email account (which is managed by Google Workspace). Wordpress/Woocommerce says it sent the email, but no email arrives.
Using the "Check & Log Email" plugin and the "WP Mail Logging" plugin, I've tested sending emails from my Wordpress site to an @rain.works address and an @gmail.com address. Each time, I get a successful
"The test email has been sent by WordPress."
message from the plugin, but only emails sent to the @gmail.com address actually arrive. I checked the Spam and All Mail filters, nothing there either.
Any ideas on what to try to fix this? Thank you.