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I can’t get the WP Mail SMTP plugin to pass authentication.
Note: I had my hosting provider disable Apache Mod_Security.
Note: I’m not a G Suite user.
This is the status of my Google OAuth consent screen:
Verification Status
Not published
User type
External
Questions:
1. Does the Verification Status of Not published explain why I can’t authenticate the plugin, and why I’m receiving the EMAIL DELIVERY ERROR shown below?
2. Once Google verifies my domain, the authentication will be successful?
3. Does Google notify me via email when my domain is verified?
4. My hosting provider told me I have to toggle on Allow less secure apps in my Google Gmail account to make the plugin work. Is this true?
EMAIL DELIVERY ERROR: the plugin WP Mail SMTP v2.0.1 logged this error during the last time it tried to send an email:
Mailer: Gmail
{
“error”: {
“errors”: [
{
“domain”: “global”,
“reason”: “required”,
“message”: “Login Required”,
“locationType”: “header”,
“location”: “Authorization”
}
],
“code”: 401,
“message”: “Login Required”
}
}