File /var/log/exim4/paniclog has non-zero size

Hello.

Checking the exim4 service,

$ sudo service exim4 restart
Stopping MTA for restart: exim4_listener.
Restarting MTA: exim4.
ALERT: exim paniclog /var/log/exim4/paniclog has non-zero size, mail
system possibly broke
$

It's possible to avoid this alert?. Because every time i delete the
file
/var/log/exim4/paniclog is re-created very soon, in the next time the
service exim4 is up. Why happen this?.

Thanks very much, in advance.

Regards.
Jose Luis.

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