I have no installation with WHITE.PM?? All have WHITE-M.PM? 
Older ones the BLACK and WHITE.PML,
My Working Directory goes back many years.
 2014 Dec  8  2020 WHITE.PML
  106 Nov 12 22:27 BLACK.PML
13009 Apr 25 14:11 WHITE-M.PM
An older Testing setup has this.
 29 Sep  8  2022 BLACK.PML
 29 Sep  8  2022 WHITE.PML
 45 Jul  7  2024 WHITE-M.PM
Contents
\TITLE Junkmail Blacklist
\TITLE Junkmail Whitelist
msetzerii@myyahoo.com
mikes@guam.net
JACK
Have another test install setup in 2024, and it has none of the files. 
No Black.pml or White.pml or white-M.pm?? But it was just an install with just default admin mail directory. Never did setup procress or opened any test emails other than a test amazon message that would cause crash if IERenderer was used to open. 
So, not clear what causes the creation or updating of the Black.pml, white.pml and white-M.pm file (or why someone else would get a White.pm file instead of white-M.pm. Is that usiing PB3 or one of the later setups?
 
        I have no installation with WHITE.PM?? All have WHITE-M.PM? 
Older ones the BLACK and WHITE.PML,
My Working Directory goes back many years.
 2014 Dec  8  2020 WHITE.PML
  106 Nov 12 22:27 BLACK.PML
13009 Apr 25 14:11 WHITE-M.PM
An older Testing setup has this.
 29 Sep  8  2022 BLACK.PML
 29 Sep  8  2022 WHITE.PML
 45 Jul  7  2024 WHITE-M.PM
Contents
\TITLE Junkmail Blacklist
\TITLE Junkmail Whitelist
msetzerii@myyahoo.com
mikes@guam.net
JACK
Have another test install setup in 2024, and it has none of the files. 
No Black.pml or White.pml or white-M.pm?? But it was just an install with just default admin mail directory. Never did setup procress or opened any test emails other than a test amazon message that would cause crash if IERenderer was used to open. 
So, not clear what causes the creation or updating of the Black.pml, white.pml and white-M.pm file (or why someone else would get a White.pm file instead of white-M.pm. Is that usiing PB3 or one of the later setups?