Package: logwatch Version: 7.4.3+git20161207-2 Followup-For: Bug #906045 Oops, the patch was reversed. This is the correct patch that works for me:
--- /usr/share/logwatch/scripts/services/dovecot 2017-01-21 16:44:03.000000000 +0000 +++ dovecot 2018-08-13 15:35:42.869962064 +0100 @@ -221,7 +221,7 @@ $Deliver{$User}{$Mailbox}++; # For Sieve-based delivery - } elsif (my ($User, $Mailbox) = ( $ThisLine =~ /^$dovecottag (?:lda|deliver)\((.*)\): sieve: msgid=.*: stored mail into mailbox '(.*)'/ ) ) { + } elsif (my ($User, $Mailbox) = ( $ThisLine =~ /^$dovecottag (?:lda|deliver)\((.*)\).*: sieve: msgid=.*: stored mail into mailbox '(.*)'/ ) ) { $Deliver{$User}{$Mailbox}++; # LMTP-based delivery