[keycloak-user] Returned mail: Data format error

[MAILER-DAEMON]

The original message was received at Wed, 28 Sep 2016 13:19:06 +0530 from lists.jboss.org [94.121.4.41]

----- The following addresses had permanent fatal errors -----
<keycloak-user at lists.jboss.org>

----- Transcript of the session follows -----
... while talking to server lists.jboss.org.:
>>> RCPT To:<keycloak-user at lists.jboss.org>
<<< 550 MAILBOX NOT FOUND

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