Hi,
Recently noticed my UTM (9.310-11) occasionally restarted. Now I found why! When sending a mail with ":" in the subject through the UTM relay. When I send pings to the UTM they stop instantaneously en within minutes the device has restarted entirely. For an MTA I use Apple Mail. I send mail at port 587, SSL enabled and with Password authentication.
Seriously, this cannot happen is it.
Can someone help me here
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