send mail not working

[UmaMaheswari-G]

Hi,
I tried sample of content approval web , while run it excuted and instance status display suspended.

Am facing the issue while send mail , An error occurred while attempting to establish an SSL or TLS connection.

In appsettings.json:
"Smtp": {
"Host": "",
"Port": "",
"DefaultSender": "",
"Username": "",
"EnableSsl":"true",
"Password": "XXXX"
}
please guide how to resolve?

[UmaMaheswari-G]

I added below code to disable SSL validation, it will work now.
.AddEmailActivities(opt =>
{
opt.DeliveryMethod = Elsa.Activities.Email.Options.SmtpDeliveryMethod.Network;
opt.Host = "********";
opt.Port = 25;
opt.SecureSocketOptions = MailKit.Security.SecureSocketOptions.None;
})

[sfmskywalker]

Hi @UmaMaheswari-G , I am happy to see you were able to figure it out. Thank you for sharing the solution!

[sfmskywalker]

Closing this as resolved: the original poster confirmed an SMTP configuration that works for their server, and that resolution was acknowledged.

For anyone finding this later, the current Email extension passes the configured SecureSocketOptions and port directly to MailKit, with Auto as the default. The TLS mode and port should therefore match the SMTP provider. SecureSocketOptions.None means no TLS; it is not a general certificate-validation workaround. If the problem persists with the server’s required TLS mode, please open a new discussion with the Elsa version, SMTP provider, port, and the full (sanitized) error.