Troubleshooting:Unable send Batch mail – The SMTP server has unexpectedly disconnected

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Question: When I try to send test mail using batch mail at Debtor Statement, error message prompted “The SMTP server has unexpectedly disconnected”. Why?

Version: 1.8 / 1.9 / 2.0

Smtp disconnected1.png


Similar types of error  :

The SMTP server requires a secure connection or the client was not authenticated. The server response was 5.7.0 Authentication Required.

Smtp disconnected2.png


535: 5.7.8 Username and Password not accepted.

Smtp disconnected3.png


Possible Reason (1):

Username or password was incorrect.


Solution (1):

Make sure you key in the correct Username and password.
You may try to login your email again to check the password is valid.


Possible Reason (2):

Security setting.


Solution (2):

If you are using Gmail, make sure you allow for Less Secure Apps.
Login your Gmail account > Manage Your Account >Security, then search for ‘Less Secure Apps’. You need to turn on the ‘Allow less secure apps’.

Smtp disconnected4.png


You may refer to the below link if you did not find the Allow less secure apps.

Troubleshooting: There is no Allow less secure apps in google account when want to use Gmail to send batch mail in AutoCount


By: Michelle 220107, Lay Swan 220125, P220127



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