Re: Email send messages failing

Hi Calvus,

Do you mean you prefer use a self-designed web application to send email by SMTP protocol with Office 365 mail service?

If so, you can find more resource in the following link.

msdn.microsoft.com/.../gg490662

Moreover, you can use SMTP relay to send the mails. Or you can deploy SMTP relay and then do the testing of the web application. You can refer the following link for how to set up SMTP relay.

support.microsoft.com/.../2600912

Thanks,

Ray Yang