My old keygen file was still there, as was the client.keys file.
Still no email.
...
2020/03/30 15:38:24 ossec-testrule: INFO: Reading local decoder file.
2020/03/30 15:38:24 ossec-testrule: INFO: Started (pid: 17631).
2020/03/30 15:38:24 ossec-maild: INFO: Started (pid: 17644).
2020/03/30 15:38:24 ossec-execd: INFO: Started (pid: 17649).
2020/03/30 15:38:24 ossec-remoted: INFO: Started (pid: 17661).
2020/03/30 15:38:24 IPv6: :: on port 1514
2020/03/30 15:38:24 Socket bound for IPv6: :: on port 1514
2020/03/30 15:38:24 ossec-remoted: INFO: Started (pid: 17663).
2020/03/30 15:38:24 rootcheck: System audit file not configured.
2020/03/30 15:38:24 ossec-analysisd: INFO: Reading local decoder file.
2020/03/30 15:38:24 ossec-analysisd: INFO: Reading rules file: 'rules_config.xml'
2020/03/30 15:38:24 ossec-analysisd: INFO: Reading rules file: 'pam_rules.xml'
2020/03/30 15:38:24 ossec-analysisd: INFO: Reading rules file: 'sshd_rules.xml'
2020/03/30 15:38:24 ossec-analysisd: INFO: Reading rules file: 'telnetd_rules.xml'
2020/03/30 15:38:24 ossec-analysisd: INFO: Reading rules file: 'syslog_rules.xml'
2020/03/30 15:38:24 ossec-analysisd: INFO: Reading rules file: 'arpwatch_rules.xml'
2020/03/30 15:38:24 ossec-analysisd: INFO: Reading rules file: 'symantec-av_rules.xml'
2020/03/30 15:38:24 ossec-analysisd: INFO: Reading rules file: 'symantec-ws_rules.xml'
2020/03/30 15:38:24 ossec-analysisd: INFO: Reading rules file: 'pix_rules.xml'
2020/03/30 15:38:24 ossec-analysisd: INFO: Reading rules file: 'named_rules.xml'
2020/03/30 15:38:24 ossec-analysisd: INFO: Reading rules file: 'smbd_rules.xml'
2020/03/30 15:38:24 ossec-analysisd: INFO: Reading rules file: 'vsftpd_rules.xml'
2020/03/30 15:38:24 ossec-analysisd: INFO: Reading rules file: 'pure-ftpd_rules.xml'
2020/03/30 15:38:24 ossec-analysisd: INFO: Reading rules file: 'proftpd_rules.xml'
2020/03/30 15:38:24 ossec-analysisd: INFO: Reading rules file: 'ms_ftpd_rules.xml'
2020/03/30 15:38:24 ossec-analysisd: INFO: Reading rules file: 'ftpd_rules.xml'
2020/03/30 15:38:24 ossec-analysisd: INFO: Reading rules file: 'hordeimp_rules.xml'
2020/03/30 15:38:24 ossec-analysisd: INFO: Reading rules file: 'roundcube_rules.xml'
2020/03/30 15:38:24 ossec-analysisd: INFO: Reading rules file: 'wordpress_rules.xml'
2020/03/30 15:38:24 ossec-analysisd: INFO: Reading rules file: 'cimserver_rules.xml'
2020/03/30 15:38:24 ossec-analysisd: INFO: Reading rules file: 'vpopmail_rules.xml'
2020/03/30 15:38:24 ossec-analysisd: INFO: Reading rules file: 'vmpop3d_rules.xml'
2020/03/30 15:38:24 ossec-analysisd: INFO: Reading rules file: 'courier_rules.xml'
2020/03/30 15:38:24 ossec-analysisd: INFO: Reading rules file: 'web_rules.xml'
2020/03/30 15:38:24 ossec-analysisd: INFO: Reading rules file: 'web_appsec_rules.xml'
2020/03/30 15:38:24 ossec-analysisd: INFO: Reading rules file: 'apache_rules.xml'
2020/03/30 15:38:24 ossec-analysisd: INFO: Reading rules file: 'nginx_rules.xml'
2020/03/30 15:38:24 ossec-analysisd: INFO: Reading rules file: 'php_rules.xml'
2020/03/30 15:38:24 ossec-analysisd: INFO: Reading rules file: 'mysql_rules.xml'
2020/03/30 15:38:24 ossec-analysisd: INFO: Reading rules file: 'postgresql_rules.xml'
2020/03/30 15:38:24 ossec-analysisd: INFO: Reading rules file: 'ids_rules.xml'
2020/03/30 15:38:24 ossec-analysisd: INFO: Reading rules file: 'squid_rules.xml'
2020/03/30 15:38:24 ossec-analysisd: INFO: Reading rules file: 'firewall_rules.xml'
2020/03/30 15:38:24 ossec-analysisd: INFO: Reading rules file: 'apparmor_rules.xml'
2020/03/30 15:38:24 ossec-analysisd: INFO: Reading rules file: 'cisco-ios_rules.xml'
2020/03/30 15:38:24 ossec-analysisd: INFO: Reading rules file: 'netscreenfw_rules.xml'
2020/03/30 15:38:24 ossec-analysisd: INFO: Reading rules file: 'sonicwall_rules.xml'
2020/03/30 15:38:24 ossec-analysisd: INFO: Reading rules file: 'postfix_rules.xml'
2020/03/30 15:38:24 ossec-analysisd: INFO: Reading rules file: 'sendmail_rules.xml'
2020/03/30 15:38:24 ossec-analysisd: INFO: Reading rules file: 'imapd_rules.xml'
2020/03/30 15:38:24 ossec-analysisd: INFO: Reading rules file: 'mailscanner_rules.xml'
2020/03/30 15:38:24 ossec-analysisd: INFO: Reading rules file: 'dovecot_rules.xml'
2020/03/30 15:38:24 ossec-analysisd: INFO: Reading rules file: 'ms-exchange_rules.xml'
2020/03/30 15:38:24 ossec-analysisd: INFO: Reading rules file: 'racoon_rules.xml'
2020/03/30 15:38:24 ossec-analysisd: INFO: Reading rules file: 'vpn_concentrator_rules.xml'
2020/03/30 15:38:24 ossec-analysisd: INFO: Reading rules file: 'spamd_rules.xml'
2020/03/30 15:38:24 ossec-analysisd: INFO: Reading rules file: 'msauth_rules.xml'
2020/03/30 15:38:24 ossec-analysisd: INFO: Reading rules file: 'mcafee_av_rules.xml'
2020/03/30 15:38:24 ossec-analysisd: INFO: Reading rules file: 'trend-osce_rules.xml'
2020/03/30 15:38:24 ossec-analysisd: INFO: Reading rules file: 'ms-se_rules.xml'
2020/03/30 15:38:24 ossec-analysisd: INFO: Reading rules file: 'zeus_rules.xml'
2020/03/30 15:38:24 ossec-analysisd: INFO: Reading rules file: 'solaris_bsm_rules.xml'
2020/03/30 15:38:24 ossec-analysisd: INFO: Reading rules file: 'vmware_rules.xml'
2020/03/30 15:38:24 ossec-analysisd: INFO: Reading rules file: 'ms_dhcp_rules.xml'
2020/03/30 15:38:24 ossec-analysisd: INFO: Reading rules file: 'asterisk_rules.xml'
2020/03/30 15:38:24 ossec-analysisd: INFO: Reading rules file: 'ossec_rules.xml'
2020/03/30 15:38:24 ossec-analysisd: INFO: Reading rules file: 'attack_rules.xml'
2020/03/30 15:38:24 ossec-analysisd: INFO: Reading rules file: 'dropbear_rules.xml'
2020/03/30 15:38:24 ossec-analysisd: INFO: Reading rules file: 'unbound_rules.xml'
2020/03/30 15:38:24 ossec-analysisd: INFO: Reading rules file: 'sysmon_rules.xml'
2020/03/30 15:38:24 ossec-analysisd: INFO: Reading rules file: 'opensmtpd_rules.xml'
2020/03/30 15:38:24 ossec-analysisd: INFO: Reading rules file: 'exim_rules.xml'
2020/03/30 15:38:24 ossec-analysisd: INFO: Reading rules file: 'openbsd-dhcpd_rules.xml'
2020/03/30 15:38:24 ossec-analysisd: INFO: Reading rules file: 'dnsmasq_rules.xml'
2020/03/30 15:38:24 ossec-analysisd: INFO: Reading rules file: 'local_rules.xml'
2020/03/30 15:38:24 ossec-analysisd: INFO: Total rules enabled: '1544'
2020/03/30 15:38:24 ossec-analysisd: INFO: Ignoring file: '/etc/mtab'
2020/03/30 15:38:24 ossec-analysisd: INFO: Ignoring file: '/etc/hosts.deny'
2020/03/30 15:38:24 ossec-analysisd: INFO: Ignoring file: '/etc/mail/statistics'
2020/03/30 15:38:24 ossec-analysisd: INFO: Ignoring file: '/etc/random-seed'
2020/03/30 15:38:24 ossec-analysisd: INFO: Ignoring file: '/etc/random.seed'
2020/03/30 15:38:24 ossec-analysisd: INFO: Ignoring file: '/etc/adjtime'
2020/03/30 15:38:24 ossec-analysisd: INFO: Ignoring file: '/etc/httpd/logs'
2020/03/30 15:38:24 ossec-analysisd: INFO: Allow listing IP: '127.0.0.1'
2020/03/30 15:38:24 ossec-analysisd: INFO: Allow listing IP: '192.168.2.1'
2020/03/30 15:38:24 ossec-analysisd: INFO: Allow listing IP: '192.168.2.190'
2020/03/30 15:38:24 ossec-analysisd: INFO: Allow listing IP: '192.168.2.32'
2020/03/30 15:38:24 ossec-analysisd: INFO: Allow listing IP: '192.168.2.10'
2020/03/30 15:38:24 ossec-analysisd: INFO: 5 IPs in the allow list for active response.
2020/03/30 15:38:24 ossec-analysisd: INFO: Allow listing Hostname: '::1'
2020/03/30 15:38:24 ossec-analysisd: INFO: 1 Hostname(s) in the allow list for active response.
2020/03/30 15:38:24 ossec-analysisd: INFO: Started (pid: 17653).
2020/03/30 15:38:25 ossec-monitord: INFO: Started (pid: 17673).
2020/03/30 15:38:25 ossec-remoted(4111): INFO: Maximum number of agents allowed: '16384'.
2020/03/30 15:38:25 ossec-remoted(1410): INFO: Reading authentication keys file.
2020/03/30 15:38:25 ossec-remoted: INFO: No previous counter available for 'server1'.
2020/03/30 15:38:25 ossec-remoted: INFO: Assigning counter for agent server1: '0:0'.
2020/03/30 15:38:25 ossec-remoted: INFO: Assigning sender counter: 0:909
2020/03/30 15:38:27 ossec-analysisd: INFO: Connected to '/queue/alerts/ar' (active-response queue)
2020/03/30 15:38:27 ossec-analysisd: INFO: Connected to '/queue/alerts/execq' (exec queue)
2020/03/30 15:38:29 ossec-syscheckd: INFO: Started (pid: 17669).
2020/03/30 15:38:29 ossec-rootcheck: INFO: Started (pid: 17669).
2020/03/30 15:38:29 ossec-syscheckd: INFO: Monitoring directory: '/etc', with options perm | size | owner | group | md5sum | sha1sum.
2020/03/30 15:38:29 ossec-syscheckd: INFO: Monitoring directory: '/usr/bin', with options perm | size | owner | group | md5sum | sha1sum.
2020/03/30 15:38:29 ossec-syscheckd: INFO: Monitoring directory: '/usr/sbin', with options perm | size | owner | group | md5sum | sha1sum.
2020/03/30 15:38:29 ossec-syscheckd: INFO: Monitoring directory: '/bin', with options perm | size | owner | group | md5sum | sha1sum.
2020/03/30 15:38:29 ossec-syscheckd: INFO: Monitoring directory: '/sbin', with options perm | size | owner | group | md5sum | sha1sum.
2020/03/30 15:38:29 ossec-syscheckd: INFO: Monitoring directory: '/boot', with options perm | size | owner | group | md5sum | sha1sum.
2020/03/30 15:38:29 ossec-syscheckd: INFO: ignoring: '/etc/mtab'
2020/03/30 15:38:29 ossec-syscheckd: INFO: ignoring: '/etc/hosts.deny'
2020/03/30 15:38:29 ossec-syscheckd: INFO: ignoring: '/etc/mail/statistics'
2020/03/30 15:38:29 ossec-syscheckd: INFO: ignoring: '/etc/random-seed'
2020/03/30 15:38:29 ossec-syscheckd: INFO: ignoring: '/etc/random.seed'
2020/03/30 15:38:29 ossec-syscheckd: INFO: ignoring: '/etc/adjtime'
2020/03/30 15:38:29 ossec-syscheckd: INFO: ignoring: '/etc/httpd/logs'
2020/03/30 15:38:29 ossec-syscheckd: INFO: No diff for file: '/etc/ssl/private.key'
2020/03/30 15:38:30 ossec-logcollector(1103): ERROR: Could not open file '/var/log/messages' due to [(2)-(No such file or directory)].
2020/03/30 15:38:30 ossec-logcollector(1950): INFO: Analyzing file: '/var/log/messages'.
2020/03/30 15:38:30 ossec-logcollector(1103): ERROR: Could not open file '/var/log/authlog' due to [(2)-(No such file or directory)].
2020/03/30 15:38:30 ossec-logcollector(1950): INFO: Analyzing file: '/var/log/authlog'.
2020/03/30 15:38:30 ossec-logcollector(1950): INFO: Analyzing file: '/var/log/auth.log'.
2020/03/30 15:38:30 ossec-logcollector(1103): ERROR: Could not open file '/var/log/secure' due to [(2)-(No such file or directory)].
2020/03/30 15:38:30 ossec-logcollector(1950): INFO: Analyzing file: '/var/log/secure'.
2020/03/30 15:38:30 ossec-logcollector(1103): ERROR: Could not open file '/var/log/xferlog' due to [(2)-(No such file or directory)].
2020/03/30 15:38:30 ossec-logcollector(1950): INFO: Analyzing file: '/var/log/xferlog'.
2020/03/30 15:38:30 ossec-logcollector(1103): ERROR: Could not open file '/var/log/maillog' due to [(2)-(No such file or directory)].
2020/03/30 15:38:30 ossec-logcollector(1950): INFO: Analyzing file: '/var/log/maillog'.
2020/03/30 15:38:30 ossec-logcollector(1103): ERROR: Could not open file '/var/www/logs/access_log' due to [(2)-(No such file or directory)].
2020/03/30 15:38:30 ossec-logcollector(1950): INFO: Analyzing file: '/var/www/logs/access_log'.
2020/03/30 15:38:30 ossec-logcollector(1103): ERROR: Could not open file '/var/www/logs/error_log' due to [(2)-(No such file or directory)].
2020/03/30 15:38:30 ossec-logcollector(1950): INFO: Analyzing file: '/var/www/logs/error_log'.
2020/03/30 15:38:30 ossec-logcollector(1103): ERROR: Could not open file '/var/log/exim_mainlog' due to [(2)-(No such file or directory)].
2020/03/30 15:38:30 ossec-logcollector(1950): INFO: Analyzing file: '/var/log/exim_mainlog'.
2020/03/30 15:38:30 ossec-logcollector: INFO: Started (pid: 17657).
2020/03/30 15:38:35 ossec-monitord: WARN: Process locked. Waiting for permission...
2020/03/30 15:38:44 ossec-logcollector: WARN: Process locked. Waiting for permission...
2020/03/30 15:39:31 ossec-syscheckd: INFO: Starting syscheck scan (forwarding database).
2020/03/30 15:39:31 ossec-syscheckd: WARN: Process locked. Waiting for permission...