On 6 Jul 2020, at 13:06, Robert Chalmers wrote:

No to the first.
I’m not missing any by grepping ‘unknown’ - if they are unknown users I don’t even want them in my system.

When postfix puts "unknown" before an IP in square brackets such as:

    unknown[45.125.65.52]

then the "unknown" refers to the lack of a verified hostname, NOT to a lack of authentication.

--
Bill Cole
b...@scconsult.com or billc...@apache.org
(AKA @grumpybozo and many *@billmail.scconsult.com addresses)
Not For Hire (currently)

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