On Thu, 31 May 2018, Palvelin Postmaster wrote:

What’s the purpose of emails like this?

Potentially: delivery probes.

--
 John Hardin KA7OHZ                    http://www.impsec.org/~jhardin/
 jhar...@impsec.org    FALaholic #11174     pgpk -a jhar...@impsec.org
 key: 0xB8732E79 -- 2D8C 34F4 6411 F507 136C  AF76 D822 E6E6 B873 2E79
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  Teach a man to fish, and he'll eat for life.
  Give him someone else's fish, and he'll vote for you.
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 6 days until the 74th anniversary of D-Day

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