@DavidCarlisle @UlrikeFischer Report sent and immediately got this back: `
<babel@braams.cistron.nl>: host mx4.xs4all.nl[194.109.24.139] said: 553 5.3.0
<babel@braams.cistron.nl>... Relaying denied (in reply to RCPT TO command)`
Will have to report this to other two e-mail addresses mentioned in polish.ldf.