Send SMTP error on VM

I can’t use Send SMTP Mail Message Activity. The error code is in the picture below.
I got UiPath.Mail.Activities v1.9.0, any packages require?

Thanks for your help!

Hi @Dicky welcome to forum

May I know like which mail domain u are using

Nived N :robot:

Happy Automation :slight_smile:

You might want to check the following article:


Welcome to forums

It might be problem due to firewall block

check as below,sent%20to%20another%20mail%20server.&text=The%20sender%20did%20not%20authenticate,it%20had%20failed%20security%20checks

Hope this may helps you