Some mail servers not available from off-campus

Clemson's general smtp server is not available outside of Clemson's network. If you have an off-campus application, device, or email client that needs to send email, we suggest using Microsoft's SMTP service. 

MS has documentation available at:  
https://support.microsoft.com/en-us/office/pop-imap-and-smtp-settings-for-outlook-com-d088b986-291d-42b8-9564-9c414e2aa040

Here are the SMTP settings:

• SMTP server name: smtp-mail.outlook.com
• SMTP port: 587
• SMTP encryption method: STARTTLS

NOTE: this may not work in every case. It does not work with gmail.

Here are some additional details:

https://learn.microsoft.com/en-us/exchange/mail-flow-best-practices/how-to-set-up-a-mu[…]application-to-send-email-using-microsoft-365-or-office-365