Thanks. I tried this:
calibre-smtp -r mail.xxxx.com --password xxxx --username "chotechai.p@xxxx.com" --port 25
-vv
chotechai.p@xxxx.com axathai@yahoo.com "Test Sending" -s "Uncle Rod" -a "unclerod.epub"
>log.txt
and the log.txt shows:
Python function terminated unexpectedly
STARTTLS extension not supported by server. (Error Code: 1)
No idea what's going on. My mail server is Lotus Notes.