Disable NTLM authentication in Wildfly mail-module

[Ralf]

I am using Wildfly 32. I want to force the mail-module to use Kerberos insteed of NTLM.
Is there any property like "mail.smtp.auth.ntlm.disable" to avoid NTLM mechanism for SMTP Authentication?

[Ralf]

Supplement

Here my jboss-32.0.0.log:

2025-01-14 16:00:56,740 FINE  [org.eclipse.angus.mail.smtp] (default task-1) Attempt to authenticate using mechanisms: LOGIN PLAIN DIGEST-MD5 NTLM XOAUTH2
2025-01-14 16:00:56,740 FINE  [org.eclipse.angus.mail.smtp] (default task-1) mechanism LOGIN not supported by server
2025-01-14 16:00:56,740 FINE  [org.eclipse.angus.mail.smtp] (default task-1) mechanism PLAIN not supported by server
2025-01-14 16:00:56,740 FINE  [org.eclipse.angus.mail.smtp] (default task-1) mechanism DIGEST-MD5 not supported by server
2025-01-14 16:00:56,740 FINE  [org.eclipse.angus.mail.smtp] (default task-1) Using mechanism NTLM

[Yeray Borges Santana]

Hi Ralf,

Take a look at the custom mail resource [1], you can create a mail session configuration passing by any Jakarta mail property, for example:

subsystem=mail/mail-session=default/custom=custom-mail:add(properties={mail.smtp.auth.ntlm.disable=true,mail.smtp.timeout=3000})

[1] https://wildscribe.github.io/WildFly/18.0/subsystem/mail/mail-session/custom/index.html

Regards!

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