Hi Manikandan

I guess the error message comes from your mail client. In that case, this means that your client is not set up to use TLS when connecting to mail server.

Allan Dukat

On 2019-11-20 11:50, ChandranManikandan wrote:
Hi Friends,

I have installed qmt on centos 7 and tried to send an email it getting
below message.

Message not sent. Server replied:

Encryption required for requested authentication mechanism
538 auth not available without TLS (#5.3.3)

Could anyone facing this issue? and what causes?

--

Regards,
Manikandan.C

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