Recently we upgraded to Version 5.0.16_GA_2921.RHEL5_64.NETWORK Apr 29, 2009.

Servers status shows convertd not running and zmcontrol status shows this output:

Host

antispam Running
antivirus Running
convertd Stopped
ldap Running
logger Running
mailbox Running
mta Running
snmp Running
spell Running
stats Running

I did find Bug 37747 – don't enable new convertd on upgrades, it seems that you guys wanted to switch to new convertd version where possible, and that it is not possible on some upgrades.

However, can anyone clarify what exactly is going under the hood now, if we upgraded, what are possible scenarios, and what's running (if anything) depending on those scenarios?