root@point:/etc/ssmtp# echo "test test test" | ssmtp -v -s yar1k01@ya.ru
[<-] 220 smtp2o.mail.yandex.net ESMTP (Want to use Yandex.Mail for your domain? Visit http://pdd.yandex.ru)
[->] EHLO localhost
[<-] 250 ENHANCEDSTATUSCODES
[->] AUTH LOGIN
[<-] 334 VXNlcm5hbWU6
[->] dmlkZW9hbGFybXNlcnZlckB5YS5ydQ==
[<-] 334 UGFzc3dvcmQ6
[<-] 535 5.7.8 Error: authentication failed:Invalid format.
ssmtp: Authorization failed (535 5.7.8 Error: authentication failed:Invalid format.)
root@point:/etc/ssmtp#


root@point:/etc/ssmtp# cat /etc/ssmtp/ssmtp.conf
hostname=localhost
FromLineOverride=YES
AuthUser=videoalarmserver@ya.ru
AuthPass=passwd
mailhub=smtp.yandex.ru:465
rewriteDomain=yandex.ru
UseTLS=YES
Debug=YES
TLS_CA_File=/etc/ssl/certs/ca-certificates.crt
root@point:/etc/ssmtp#

root@point:/etc/ssmtp# cat revaliases
# sSMTP aliases
#
# Format:	local_account:outgoing_address:mailhub
#
# Example: root:your_login@your.domain:mailhub.your.domain[:port]
# where [:port] is an optional port number that defaults to 25.
root:videoalarmserver@yandex.ru:smtp.yandex.ru:465
root@point:/etc/ssmtp#