[Dovecot] Revert to TLS1+

data/conf/dovecot/dovecot.conf

@@ -28,7 +28,7 @@ mail_attachment_min_size = 128k
 # Dovecot 2.2
 #ssl_protocols = !SSLv3
 # Dovecot 2.3
-ssl_min_protocol = TLSv1.2
+ssl_min_protocol = TLSv1
 
 ssl_prefer_server_ciphers = yes
 ssl_cipher_list = ALL:!ADH:!LOW:!SSLv2:!SSLv3:!EXP:!aNULL:!eNULL:!3DES:!MD5:!PSK:!DSS:!RC4:!SEED:!IDEA:+HIGH:+MEDIUM