Knowledge Base

Why do I always get the error message "Mail server authentication failed" when testing the Email server using Gmail?

Scenario

I am sure the Gmail password is correct.

Why do I always get the error message "Mail server authentication failed" when testing the Email server using Gmail? 

Step

You can try these troubleshooting steps.

1. Login to your Gmail and check if "Less secure app access" is turned on.

2. Visit the website and follow the steps on the page.

https://www.google.com/accounts/DisplayUnlockCaptcha

Verification

You will then get "Test email has been sent successfully." in the result.



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Question Profile

LANGUAGE:
ARTICLE ID:018124
TYPE:Troubleshooting
FIRMWARE:4.62 and later versions
VIEWS:291
VOTES:1
TECHNOLOGY:
MODEL:ZyWALL 110,ZyWALL 1100,ZyWALL 310 (view more model name)

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