root@laptop:/home/yar1k# cat /etc/ssmtp/ssmtp.conf
# The user that gets all the mails (UID < 1000, usually the admin)
root=videoalarmserver@yandex.ru

# The mail server (where the mail is sent to), both port 465 or 587 should be acceptable
# See also https://support.google.com/mail/answer/78799
mailhub=smtp.yandex.ru:587

# The address where the mail appears to come from for user authentication.
rewriteDomain=yandex.ru

# The full hostname
hostname=localhost

# Use SSL/TLS before starting negotiation
UseTLS=Yes
UseSTARTTLS=Yes

# Username/Password
AuthUser=videoalarmserver
AuthPass=

# Email 'From header's can override the default domain?
FromLineOverride=yes

root@laptop:/home/yar1k# cat /etc/ssmtp/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.
yar1k:videoalarmserver@yandex.ru:smtp.yandex.ru:587
root:videoalarmserver@yandex.ru:smtp.yandex.ru:587root@laptop:/home/yar1k#
root@laptop:/home/yar1k#
root@laptop:/home/yar1k# echo "test test test" | /usr/sbin/ssmtp -v -s yar1k01@ya.ru
[<-] 220 smtp2j.mail.yandex.net ESMTP (Want to use Yandex.Mail for your domain? Visit http://pdd.yandex.ru)
[->] EHLO localhost
[<-] 250 ENHANCEDSTATUSCODES
[->] STARTTLS
[<-] 220 Go ahead
[->] EHLO localhost
[<-] 250 ENHANCEDSTATUSCODES
[->] AUTH LOGIN
[<-] 334 VXNlcm5hbWU6
[->] dmlkZW9hbGFybXNlcnZlcg==
[<-] 334 UGFzc3dvcmQ6
[<-] 535 5.7.8 Error: authentication failed:Invalid format.
ssmtp: Authorization failed (535 5.7.8 Error: authentication failed:Invalid format.)
root@laptop:/home/yar1k#