Greg Wooledge <wool...@eeg.ccf.org> writes: > Either you didn't run "apt-get update" first, or your mirror is out of > sync. The current version of dovecot-core in buster is > 1:2.3.4.1-5+deb10u1.
Thank you. It was the former. I failed to run apt-get update but I didn't just forget. Ever since I upgraded to buster, I see a line in syslog that goes: Nov 4 06:10:01 wb5agz systemd[1]: Starting Daily apt upgrade and clean activities... Before buster, I would run sudo apt-get update and then sudo apt-get upgrade. I thought the cron job had done this automatically this morning when it ran. After running apt-get update, all was quite well. Martin