Infos:
- Used Zammad version: 6.3.0-1715168141.6baf144b.jammy
- Used Zammad installation type: (source, package, docker-compose, …) Package
- Operating system: Ubuntu 22.04.4
- Browser + version: Firefox
Expected behavior:
- Email sent to customer/user
Actual behavior:
- Delivery failed: “Unable to send email to ‘user@domain.com’: Can’t use Channel::Driver::Smtp: #<Net::SMTPAuthenticationError: Net::SMTPAuthenticationError>”
However the agent does receive a notification email. Which leads me to believe this is an internal issue with Zammad. This is a shared mailbox on 365 and I have set SmtpClientAuthenticationDisabled to False.
We also have a local email proxy server. If I can’t find a fix for this error, is there a way to tell Zammad to use the relay for outbound email instead of 365?