I just upgraded from 2.7.1 to 2.9.2 and I am no longer any to send email from my site. Everything worked before the upgrade earlier today so it isn't an issue with the hosting provider.
I configured SMTP and was still not able to send emails, however when I use the "send a test message" option under WP-Mail-SMTP I am able to receive the messages.
I'm hoping I'm just missing something simple. Let me know..
Thanks
Chris