Trying to send mail using SMTP Outlook.Fails showing "Error occurred connecting to e-mail server: 535 5.7.3 Authentication unsuccessful" Any inputs please?
Have you allowed less secure apps on the outlook account?
Leif,I thought we would need to enable less secure app feature only for G-mail account.Can you share me details on How to enable less secure app feature for Outlook please?
Sorry, you are right.
Try enabling SSL encryption.
Still it shows same when given Host as smtp.office365.com
Did someone find the solution for this?
Im having the same issue of: Error occurred connecting to e-mail server: 535 5.7.3 Authentication unsuccessful
If you use 2-way authentication, you need to setup an "App" password. If I remember it well, the same counts for Google. See Create an app password for Office 365 - Office 365
Thanks! This worked well for me.
for any other details, you can visit - outlook customer support
For the outbound Outlook connection
Use TLS? checked
Use SSL? unchecked
User / Password Authorization? checked
And provide the user name and password. This works for us.
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