[ Largely off-topic here, but perhaps some readers will benefit. ]
If, in addition to any Postfix systems you may have, you also have
some Exim systems, please make sure to upgrade them to 4.92 promptly:
Qualys Security Advisory
The Return of the WIZard: RCE in Exim (CVE-2019-10149)
https://www.openwall.com/lists/oss-security/2019/06/05/4
[ For those not old enough to remember, "WIZard" is an allusion to
the Morris Worm of 1988. ]
And now back to your regular programme...
--
Viktor.
