limits in high-security mode with ssl

Hello.

I'm using dovecot in high-security mode:

service_count = 1 for imap-login service

starttls is requires, so the maximum number of active connections is process_limit (which is set to 1024) for the same imap-login service.

But with this setup I got:

doveconf: Warning: service auth { client_limit=1000 } is lower than required under max. load (1324) doveconf: Warning: service anvil { client_limit=1000 } is lower than required under max. load (1227)

1. Where did 1324 and 1227 come from?
2. How configuration should be updated so these warnings disappear?

-- sergio.