Erik Colson <eco@ecocode.net> writes:

> When I use gnus-summary-move-article [Bm] to move an article into
> another group on a dovecot imap server, the timestamp in other clients
> gets changed to actual date/time. The header of the article still
> represents the correct timestamp though (and so does gnus). But the
> timestamp is faulty when accessing the group through Mail.app on my Mac.

I have noticed this as well, but I was never clear on whether the
received date was wrong or if it was just that clients other than gnus
were sorting on the wrong date.

This seems to be the IMAP received tiemstamp:

http://serverfault.com/questions/588618/maintain-email-timestamp-when-transferring-between-email-servers-using-an-email

http://www.dovecot.org/list/dovecot/2008-July/032165.html


> Is this dovecot related ? or can I configure gnus somehow to not change
> the timestamp ? For info, when moving mail between groups from within
> Mail.app everything is handled correctly (also in gnus).

As I understand it from the dovecot mail message above, gnus should
probably use APPEND when moving and set the date to match the source
message.

Another view is that the current behavior is right because the message's
received date is the time it was copied into the account.

But, I think preserving the received date on copy is probably more
useful overall.