Email Alerts isnt working since 29.12.16

Hello weve made every Dayer 0:10 Oclock automatic Updates. After the 29.12.16 we dont get any Alter Emails

2017-01-10 02:27:01 System Could not issue critical alert for rule ‘Devices up/down’ to transport ‘mail’ Error: SMTP connect() failed. https://github.com/PHPMailer/PHPMailer/wiki/Troubleshooting
2017-01-10 02:22:01 System Could not issue critical alert for rule ‘Devices up/down’ to transport ‘mail’ Error: SMTP connect() failed. https://github.com/PHPMailer/PHPMailer/wiki/Troubleshooting

We Test a secured Telnet connection to our Email Server and it works fine.
We dont changed anything on our settings.

A new option has been added to disable AUTO TLS in mail transport, try setting it to false.

Can you give me more instroduction where i can finde this option ? under Settings -> Email Transport i cant found them.

ok it works again i validate our system and found out that its outdated and updated it to the latest version and fix a chown

Hi there,
I am having the same problem. I have updated the libre version and its all up-to-date now.
Here is the ./validate.php
[OK] Composer Version: 1.6.4
[OK] Dependencies up-to-date.
[OK] Database connection successful
[OK] Database schema correct

Thats’s what i am getting.
Could not issue critical alert for rule ‘Service up/down’ to transport ‘mail’ Error: SMTP connect() failed. https://github.com/PHPMailer/PHPMailer/wiki/Troubleshooting

I can connect to my smtp from the machine. Is there anyway to troubleshoot please?

Thank you

That error is pretty self explanatory. Whatever smtp service you are trying to connect to isn’t available or is blocked from LibreNMS.