What kind of mail-send authentication: Win-Outlook ?

My dial-up ISP suddenly requires mail-send authentication,
which he expects all Win-Outlook users to set up.

Since I nearly had a nervous breakdown trying to use Outsp00k,
I want to rather patch my mailer [under the Oberon OS].

RFC 2554 & RFC 2595 relate to SMTP Authentication, but
there are apparently several other types.

If I can just know what authentication type Win-Outlook uses,
I'll copy that.

Thanks for any info.


== Chris Glur.