Issues with email

[Darktortue]

Hello,

I'm starting a zabbix server version 4.4. I have an issue when I want to set up the media type : email.
I have a smtp server which uses port 587 but when i want to test, i have errors. Here's my set up right now :

• Name: E-mail
• Type: E-mail
• SMTP server: mail.company.com
• SMTP port: 587
• SMTP helo: company.com
• SMTP email: [email protected]
• Conn. security: SSL/TLS
• SSL verify peer: unchecked
• SSL verify host: unchecked
• auth: username and password
• Username: [email protected]
• pass: password
• enabled: checked

When SSL/TLS is selected, I have this error :

SSL connect error: error:140770FC:SSL routines:SSL23_GET_SERVER_HELLO:unknown protocol

When STARTTLS is selected, I have this error :

Failure when receiving data from the peer

If anyone has an idea, it would be great, thanks

PS : Sorry if my english is not correct.

[Hamardaban]

You need to look on the mail server side to see what type of protected protocol (with what parameters) you can use when sending to 587.
Perhaps there are no secure protocols enabled at all.