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When sending mail via SMTP a java.lang.AssertionError occurs. This also happens when trying to send a test e-mail. The following error appears in the log:


The JVM allows you enable or disable the assertions by using the flags -ea / -da. Assertions are mainly for testing purpose and should be disabled in production.


Ensure the JVM settings contain -da to disable assertions. See Setting Properties and Options on Startup for instructions.

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