What if Receiving Server Lacks TLS Support?
Discover what happens when a receiving server doesn't support TLS encryption in Zendesk, and how ESMTP is used instead.
What happens if the receiving server does not support TLS encryption?
If the receiving server does not support TLS encryption, Zendesk will use ESMTP instead. While TLS provides encryption for emails, ESMTP does not, meaning the email will be sent without encryption in this case.
This is because Zendesk cannot force a TLS connection if the recipient's server does not support it. Therefore, the security of the email depends on the capabilities of the recipient's email provider.
More related questions
Are outgoing emails in Zendesk encrypted to end users?
Yes, outgoing emails in Zendesk are encrypted to end users when possible. Zendesk Support and Zendesk Chat use Transport Layer Security (TLS) to encrypt emails, which is automatically enabled for all accounts. This means that if the recipient's…
Is TLS encryption enabled by default in Zendesk?
Yes, TLS encryption is enabled by default in Zendesk for all accounts. This means that as long as the recipient's email provider supports TLS, emails sent from Zendesk will be encrypted automatically. This default setting ensures that your…
Can I force a TLS connection for outgoing emails in Zendesk?
No, it is not possible to force a TLS connection for outgoing emails in Zendesk. Zendesk uses opportunistic TLS, which means it will encrypt emails if the recipient's server supports it, but cannot enforce encryption if the server does not. This…
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