On 01 Jun 2022, Phil Taylor said the following...

 PT> I have used about every free smtp mail server including google, aol,
 PT> yahoo and even hosted my own server and it's conintinue to fail sending
 PT> any any recover or validate passwords.

 PT> SMTP Auth Type   | CRAM-MD5

220 smtp.mail.yahoo.com ESMTP ready
[...]
250 STARTTLS
STARTTLS
220 2.0.0 Ready to start TLS
[...]
250 AUTH PLAIN LOGIN XOAUTH2 OAUTHBEARER

It doesn't look like Yahoo supports CRAM-MD5 as an auth method.  Maybe try setting it to Login or Plain.

 PT> --- Mystic BBS v1.12 A47 2021/12/25 (Windows/32)

Also make sure you have cryptlib installed:

http://wiki.mysticbbs.com/doku.php?id=cryptlib#windows


Jay

... Sometimes I sits and thinks, and sometimes I just sits.

--- Mystic BBS v1.12 A48 2022/04/26 (Raspberry Pi/32)