Upgrading from 2.3 to til 2.4

[Per Steinar Iversen]

Recently I upgraded a moderately busy Cyrus imap from 2.3.x to 2.4.7

I used one of the excellent rpms by Simon Matter and everything went 
smoothly until the upgrade went live: New mail arrived at once and this 
triggered an index upgrade, the log contains lines like "Index upgrade: user.xyz (10 -> 12)"

Upgrading the index takes some time, in the meantime sendmail delivers 
more mail, the load soars as index upgrades are run in parallell and 
sendmail eventually effectively stops processing mail. Later as a number 
of index upgrades finishes the load drops, sendmail revives and the whole 
cycle restarts.

Running a reconstruct on user.% before allowing in new mail, after the 
upgrade, seems to be a better and more orderly option than allowing 
sendmail to do the job?

BTW: What happened to the rpms published by Simon Matter? Nothing to be 
found at http://www.invoca.ch/pub/packages/cyrus-imapd/ recently.

-psi