Working from home on an XP Machine, trying to configure IIS to send emails from Asp.Net via my broadband provider (BT).
Relay 127.0.0.1 enabled, so now errors are:
The SMTP server requires a secure connection or the client was not authenticated. The server response was: 5.7.3 Client was not authenticated
Pertinent settings that I can see are (in IIS Default SMTP Virtual Server properties):
Access, Authentication (presumably app to IIS): Basic + Integrated Windows
(However Basic includes correct BT server smtp.btconnect.com -> suggests this is authentication relevant IIS to BT, not app to IIS)
Access, Relay: 127.0.0.1 added
Delivery, Outbound Security: (presumably IIS to BT) Basic Authentication
UserName: firstname.lastname@example.org (tried with and without @domain)
Password: ***** per my account at Bt
Integrated Windows Authentication disabled
TLS Encryption NOT selected
I cannot see any other obvious candidates for authentication.
I presume model is Asp.Net App -> IIS (step 1) and IIS -> BT (step 2)
I presume Access, Authentication specifies step 1, and Delivery, Outbound Security handles step 2 - though why then does IIS recognise my bt server in step 1?
Any help appreciated.