Description of problem:
When using Dovecot and sieve to deliver emails into mailboxes, the sieve log messages of "stored mail into mailbox"

Version-Release number of selected component (if applicable):
RHEL 8.3
logwatch-7.4.3-9.el8.noarch
dovecot-2.3.8-4.el8.x86_64

How reproducible:
Every time

Steps to Reproduce:
1. Set up Postfix with Dovecot as LDA, using sieve to filter emails
2. Send an email for local delivery that uses Postfix -> Dovecot LDA -> sieve
3. Wait for the daily logwatch mail message to be sent, or change "Range = yesterday" to "Range = All" in logwatch's configuration, and run /etc/cron.daily/0logwatch


Actual results:

Logwatch sends the sieve "stored mail into mailbox" messages as unmatched entries:

 --------------------- Dovecot Begin ------------------------ 

 
 
 **Unmatched Entries**
    dovecot[88830]: lda(user)<88830><66cjAfWmgWD+WgEAzVjm2Q>: sieve: msgid=<20210422164020.E0F59316694D.com>: stored mail into mailbox 'INBOX': 1 Time(s)



Expected results:
Logwatch should not list these messages as unmatched, instead counting them as deliveries:

 --------------------- Dovecot Begin ------------------------ 

 
 Dovecot Deliveries: 1



Additional info:

After some research, it appears this is already fixed in a newer upstream version:

https://sourceforge.net/p/logwatch/bugs/84/

To test this, line 189 of /usr/share/logwatch/scripts/services/dovecot can be changed from this:


} elsif ( ($User, $Mailbox) = ( $ThisLine =~ /^$dovecottag (?:lda|deliver)\((.*)\): sieve: msgid=.*: stored mail into mailbox '(.*)'/ ) ) {


to this (taken from logwatch 7.5.3 and adapted for 7.4.3 syntax):


} elsif ( ($User, $Mailbox) = ( $ThisLine =~ /^$dovecottag (?:lda|deliver)\((.*)\)(?:<[^>]+><[^>]+>)?: sieve: msgid=.*: stored mail into mailbox '(.*)'/ ) ) {