We've tried using non-secure port like 25, it works. But when we are trying to set email notification using port 465, it failed and showing this error.
22020-09-16 08:50:43 UTC WARNING [<default,0x1>] [<server>, MailSenderImpl] Could not send mail to firstname.lastname@example.org. NotificationResult [retryRecommended=true, message=Failed to send SMTP email using sender address: <email@example.com>, reason: EmailException: Sending the email to the following server failed : smtp_server:465 | SSLException: Unrecognized SSL message, plaintext connection?, exception=EmailException: Sending the email to the following server failed : smtp_server:465, deliveryStatus=UNEXPECTED_ERROR, response=null, uri=null, suppressed=]
Any ideas on how to solve it?
Solved! Go to Solution.
I don't know if this thread is read by anybody but I have the same problem.
I'm using Dynatrace Managed (v1.216.120 ) trying to connect to office365 server over SSL/TLS over port 587.
I contacted support but only a little log lines was provided with the same error reported by Sandre.
I also have a trace for the network team showing allowed connections and inmediately finish with a "tcp-rst-from-client" reason, not the normal "tcp-fin". Not interception on the FW side.
Sandre (or anyboy) have you find out a solutionfor this issue?
Thanks in advance.