"Wanna" ransomware outbreak. Please see this Sophos article sophos.com/kb/126733 for advice on how to protect your organization. Immediate action recommended.
By default, PureMessage for Microsoft Exchange alerts administrators by email if it
Other alerts can be configured, and the text of the alerts customised.
Administrators can receive alerts on
Recipients and senders can receive alerts on suspicious mail processed. Sophos recommends that Sender alerts are not activated where the mail server receives external email, because of the risk of mailing alerts where a virus has spoofed the From: address.
For details of how to configure the alerts refer to the PureMessage for Microsoft Exchange user manual.
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