My system is failing to send emails. I’m connecting to my own SMTP server with a valid SSL certificate for the mail server address. I also setup an SSL certificate for InvoiceNinja through Let’s Encrypt.
I tried variations of the .env file with and without TLS but all fail with this error message:
Unable to connect with STARTTLS: stream_socket_enable_crypto():SSL operation failed with code 1. OpenSSL Error messages:
error:0A000086:SSL routines::certificate verify failed
Any idea’s what could be the issue?