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Postfix SASL auth fail

RolandG

New Pleskian
Hello there! I've just setup CentOS 6.6 with Plesk at my Hoster OVH. Now when I want to connect to the smtp server I get following message:

Code:
SASL LOGIN authentication failed: encryption needed to use mechanism

SASL auth is enabled in the main.cf also submission. I connect to tls://smtp.example.com:587 with my email and password.
 
What sort of output of following command:

# postconf -n | grep smtpd_sasl
 
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