[bug-mailutils] --uidl keeps downloading the same message over and over again

[sokolgeo]

Hello!

I searched archives but did not find answer there: 
https://lists.gnu.org/archive/cgi-bin/namazu.cgi?query=uidl&submit=Search%21&idxname=bug-mailutils&max=100&result=normal&sort=score

I am having a difficulty with latest mailutils-3.6, which I downloaded 
and compiled from source from https://mailutils.org.

When I issue the following command I expect movemail only to download 
new messages from my pop server:

movemail --keep-messages --uidl --verbose 
--debug-level='mailbox.prot,!trace6' 
pop://my_username%40posteo.net:address@hidden,de ~/local.mbox

Unfortunately, when I run the above command second and third time, the 
local.mbox keep getting all the messages from the pop server. In the 
debug output I see no errors - movemail just asks server capabilities, 
server announces support for UIDL, then movemail asks for list of 
messages, server provides that with unique identifier per message, but 
then movemail just downloads each message, one by one.

I also do not see any temporary file created in my home directory where 
movemail could be storing the IDs of messages it has downloaded. I also 
do not see unique ID header in all messages in downloaded local mbox. So 
I am at loss - how ever movemail could understand which messages it has 
already downloaded in previous sessions?

What am I doing wrong? The pop server reports support for UIDL and 
provides unique IDs as much as I can see in debug output. I seem to ask 
movemail to use these with --uidl option, right?

What is the right way to only download into the local mbox file only the 
messages which were not previously downloaded in earlier movemail 
sessions?


Thank you!

George