PLEASE READ Advisory: Kernel memory issue affecting multiple OS (aka F**CKWIT, KAISER, KPTI, Meltdown & Spectre) for the latest updates.
You get the the following error in Reflexion:
Send mail through your approved SMTP relay, or add a PTR record so the rDNS check more closely resembles their HELO name.
This error also occurs when there is an SPF record mismatch and the receiving server has a robust SPF checking rule.
Applies to the following Sophos product ReflexionReflexion Total Control (RTC) Email Security
Make sure that your SPF record is up to date and includes Reflexion references. See, Create SPF Record to Authorize Reflexion Servers to Send Email.
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