ldap/mailbox server:
zmloggerctl status; echo $?; ps ax | grep zmlogger
0
9309 ? S 0:08 /usr/bin/perl /opt/zimbra/libexec/zmlogger
9426 ? S 0:00 zmlogger: zmrrdfetch: server
11693 pts/0 R+ 0:00 grep zmlogger

on the MTA server:
zmloggerctl status; echo $?; ps ax | grep zmlogger
zmlogswatchctl is not running
1
22861 pts/0 R+ 0:00 grep zmlogger

grep STATUS /var/log/zimbra-stats.log on the mailbox/ldap server:
Oct 20 10:00:07 zimbra-mta zimbramon[22602]: 22602:info: 2010-10-20 10:00:01, STATUS: zimbra-mta: antispam: Running
Oct 20 10:00:07 zimbra-mta zimbramon[22602]: 22602:info: 2010-10-20 10:00:01, STATUS: zimbra-mta: antivirus: Running
Oct 20 10:00:07 zimbra-mta zimbramon[22602]: 22602:info: 2010-10-20 10:00:01, STATUS: zimbra-mta: mta: Running
Oct 20 10:00:07 zimbra-mta zimbramon[22602]: 22602:info: 2010-10-20 10:00:01, STATUS: zimbra-mta: snmp: Running
Oct 20 10:00:07 zimbra-mta zimbramon[22602]: 22602:info: 2010-10-20 10:00:01, STATUS: zimbra-mta: spell: Running
Oct 20 10:00:07 zimbra-mta zimbramon[22602]: 22602:info: 2010-10-20 10:00:01, STATUS: zimbra-mta: stats: Running
Oct 20 10:00:09 zimbra zimbramon[19718]: 19718:info: 2010-10-20 10:00:01, STATUS: zimbra: ldap: Running
Oct 20 10:00:09 zimbra zimbramon[19718]: 19718:info: 2010-10-20 10:00:01, STATUS: zimbra: logger: Running
Oct 20 10:00:09 zimbra zimbramon[19718]: 19718:info: 2010-10-20 10:00:01, STATUS: zimbra: mailbox: Running
Oct 20 10:00:09 zimbra zimbramon[19718]: 19718:info: 2010-10-20 10:00:01, STATUS: zimbra: snmp: Running
Oct 20 10:00:09 zimbra zimbramon[19718]: 19718:info: 2010-10-20 10:00:01, STATUS: zimbra: spell: Running
Oct 20 10:00:09 zimbra zimbramon[19718]: 19718:info: 2010-10-20 10:00:01, STATUS: zimbra: stats: Running
Oct 20 10:00:18 zimbra mailboxd: INFO [imap.csv] [] slogger - imap.csv: timestamp,command,exec_count,exec_ms_avg:: 10/20/2010 10:00:18,STATUS,17,3
Oct 20 10:01:18 zimbra mailboxd: INFO [imap.csv] [] slogger - imap.csv: timestamp,command,exec_count,exec_ms_avg:: 10/20/2010 10:01:18,STATUS,1,1


however in the web interface all the mta services are with red X - the mailbox/ldap are showing ok.