Email reports stopped arriving

I have reports set up to create a new report and send email on a daily, weekly and monthly schedule. For several days I have received no emails, but the report files are always created properly. This used to happen occasionally but seemed to either correct itself or would be corrected if I go into setup and test the email. For over a week it has not corrected itself nor has my test procedure fixed it. Sometimes NetWorx goes into "not responding" when I try to test, but usually it just pops up an "e-mail sent successfully" window. Never have I seen an "e-mail not sent" or "e-mail failed" error. I have tried two different target emails without success. I have not tried to find anything in event viewer, but will look if you wish and tell me what to look for.
Thanks.

Thank you for reporting this issue. We have discovered an issue with the recent changes in the domain configuration that could have caused the problems you described and lead to some providers rejecting our emails or placing them in the spam folder.

We have now corrected the configuration. It may take up to 24 hours for the changes to fully propagate across the internet. Once that time has passed, the emails should work fine again. Please try sending a test email again from NetWorx using the automatic settings, and let us know how it goes.

All of my scheduled emails (daily, weekly, monthly) have now arrived at my email address as they should. Thought I'd let you know. Thanks for your help and attention.

Thank you for letting us know. We are very glad that everything is working well now.