[keycloak-user] Returned mail: Data format error

[MAILER-DAEMON]

The original message was received at Fri, 27 Jul 2018 08:15:04 +0800
from 39.161.52.19

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

----- Transcript of session follows -----
... while talking to lists.jboss.org.:
>>> DATA
<<< 400-aturner; %MAIL-E-OPENOUT, error opening !AS as output
<<< 400-aturner; -SYSTEM-F-EXDISKQUOTA, disk quota exceeded
<<< 400

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