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Ubuntu: How to setup TLS on postfix and dovecot
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Ubuntu: How to setup TLS on postfix and dovecot
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TGates
Sentora Council - Head of Support Team  OS: Ubuntu 20.04 LTS Version: 2.0.2 Server: i7-6700K @ 4GHz, 8 cores 32GB Ram  Nothing we can do, you are using a self-signed certificate. Get a free certificate using Let's Encrypt  You can use parts of this tutorial to get a certificate: http://forums.sentora.org/showthread.php?tid=2535 Just skip the parts for custom vhost entries and port forwarding, etc. Just make sure you have openSSL, mod_ssl and let's encrypt installed (Info in the tutorial) then update your email settings to use the new let's encrypt certificate 
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