Hi,

When my free mail provider mailbox runs out of free space, I have my local Dovecot server one-way sync that free mail mailbox and then I delete the contents of the free mail mailbox. So I can archive my emails in an "offline archive".

Initially, I used "doveadm backup", but later always used: doveadm -Dv sync -u offline@example.org -1 -f -R imapc:

At large, this works. But only during the first "backup" the "Sent" folder was synced as well. Nowdays, it only downloads the Inbox, but not my Sent Items.

I tried adding the "-N" parameter, but that said: "Fatal: -N parameter requires syncing with remote host"

I'm on Debian 12 and Dovecot 2.3.x: 1:2.3.19.1+dfsg1-2.1+deb12u1 amd64.

What could I check or try?

And one more question: To better understand the debug output: What is "brain M" and "brain S"?

Yours, Reg