[MlMt] messages re-sort when marked as read

[Bill Cole]

On 2024-03-25 at 13:41:53 UTC-0400 (Mon, 25 Mar 2024 12:41:53 -0500)
Mike Karels <mailmate at lists.freron.com>
is rumored to have said:

> The only thing that changed in the general timeframe when I noticed 
> the problem was that I upgraded my mail server to a FreeBSD version 
> with a newer sendmail.  Of course, MailMate doesn't talk directly to 
> sendmail for incoming mail.  The IMAP server is dovecot.

I don't keep up with the nitty-gritty of Sendmail config on all 
platforms, but  this *could* be caused by a change in how it accepts 
mail via SMTP or how it delivers to dovecot. E.g. if the multiple copies 
are sent to multiple envelope recipients handled by the same MX, it is 
possible that sendmail previously allowed that to all happen in one 
transaction with one copy of the message being  accepted with multiple 
RCPT commands but now forces the deliveries to be split up for spam 
detection purposes. It also could be that the sendmail definition of  
the 'mailer' delivery agent it uses for dovecot delivery has changed to 
force envelope-splitting at that stage.

I don't know that there's any documentation of MM doing useful duplicate 
detection, and I have never seen it mark any of the duplicates that I 
receive, which are largely due to people sending me copies of on-list 
replies and various systems (e.g. ASF Bugzilla) mailing me both directly 
and via a mailing list. My dupes never deliver to the same mailboxes 
(thanks to procmail) but they also never arrive on the same SMTP 
connection, so MM would have a hard time identifying them as dupes.


-- 
Bill Cole
bill at scconsult.com or billcole at apache.org
(AKA @grumpybozo and many *@billmail.scconsult.com addresses)
Not Currently Available For Hire