Without smtp Server Authentication (with static IP or internal Mail Server)
Note: Most public mail servers only accept a message for
there users and don't forward it to other servers.
With authentication (dynamic ip or no internal Mail Server)
Note: Some public mail servers only accept the message if the
"From-Address" is a valid DNS name (even @example.com)...
With Outlook Api (so the message shows up in sent items)
Note: This approach should only be used if this application
already requires outlook for other features. It is generally not recommended
to use this because of stability and deadlock issues. Even though it should
work in most cases, applications that use the com API of Outlook have proven
to be verry fragile in production environments. Common issues are the script
timeouting or crashing as well as Outlook deadlocking. Most of the time this
is caused by the user having many (or complex) filter rules or by mailboxes
with high itemcount.