Since I want to avoid debugging old and already fixed bugs, I updated to
# dovecot --version
2.3.8 (9df20d2db)
Now the debug log is a bit more chatty, but the error remains:
Debug: program exec:/usr/lib/dovecot/sieve/rspamd-learn-ham.sh: Created
Debug: program exec:/usr/lib/dovecot/sieve/rspamd-learn-ham.sh: Pass
environment: [email protected]
Debug: program exec:/usr/lib/dovecot/sieve/rspamd-learn-ham.sh: Pass
environment: HOME=/var/vmail/mailboxes/domain.tld/user
Debug: program exec:/usr/lib/dovecot/sieve/rspamd-learn-ham.sh: Pass
environment: HOST=mail.domain.tld
Debug: Mailbox INBOX: UID 22039: Opened mail because: mail stream
Debug: program exec:/usr/lib/dovecot/sieve/rspamd-learn-ham.sh:
Establishing connection
Debug: program exec:/usr/lib/dovecot/sieve/rspamd-learn-ham.sh: Forked
child process
Debug: program exec:/usr/lib/dovecot/sieve/rspamd-learn-ham.sh (9891):
Connected to program
Error: program exec:/usr/lib/dovecot/sieve/rspamd-learn-ham.sh (9891):
write(program stdin) failed: Broken pipe
Debug: program exec:/usr/lib/dovecot/sieve/rspamd-learn-ham.sh (9891):
Failed to run program
Debug: program exec:/usr/lib/dovecot/sieve/rspamd-learn-ham.sh (9891):
Disconnected
Debug: program exec:/usr/lib/dovecot/sieve/rspamd-learn-ham.sh (9891):
Child process ended
Error: program exec:/usr/lib/dovecot/sieve/rspamd-learn-ham.sh (9891):
Terminated abnormally with signal 11
Debug: program exec:/usr/lib/dovecot/sieve/rspamd-learn-ham.sh (9891):
Destroy
Error: sieve: pipe action: failed to pipe message to program
`rspamd-learn-ham.sh': refer to server log for more information.
[2019-11-17 19:32:40]
sieve: left message in mailbox 'INBOX'
Error: sieve: Execution of script
/usr/lib/dovecot/sieve/report-ham.sieve failed
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