I see that many users have had this problem before. It's quite disappointing.

Just a few days ago, I signed up for Zoho Mail (Personal Email). Right away, I wasn't able to send any emails, instead always getting the error, "Unable to send message;Reason:554 5.1.8 Email Outgoing Blocked." On the second day, I was able to send only two emails before the same error came back. Now, on the third day, nothing has changed.

Obviously, I'm not sending any spam. I only crafted individual emails directed to one, maybe two recipients. What would be the cause of the error?

I'd really appreciate a quick fix. I already tried using the contact form twice. Since this is apparently a recurring problem, instead of individual fixes, maybe the whole system needs a little overhaul.

Thank you!