Why do I get an "authentication failed" notice when I try to send emails through my business email address for my domain I created with Wealthy Affiliate? Why am I unable to receive any emails as well?

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Hey Vanessa,

When searching Google for "authentication failed" (without the quotation marks, of course), I found the following explanation:
"Authentication failed means there is a temporary block due to too many failed attempts. After 30 minutes after the last login attempt, the block is removed automatically by the system.
Source: sync.com"

Hope you find this helpful.