SMTP issue on higher version

Hi all, Im using SMTP activity to send mails.
This activity is working fine with mail package version 1.3.0.
But giving me error mailkit.security.authenticationexception on 1.19.0 mail package version.
All properties are same for both versions.
Please suggest me resolution for this.
Thank you.

@Ketan_Wajekar

Can you please show what you are using and in secure connection are you using starttls?

Cheers

Hi,

In secure connection we have used Auto options.

Thanks.

@Ketan_Wajekar

Please try using above…Also please confirm what mail server you are connecting to

cheers

Hi,

We are using Outlook id for sending mails.

Thanks

@Ketan_Wajekar

Please change auto and check

cheers