Hmc Mail Checker 22 [extra Quality]
sudo ln -s /opt/hmc/bin/hmc-mail-checker22 /usr/local/bin/hmc-mail-checker22 Integrating with Nagios / Zabbix You can use HMC Mail Checker 22 as a monitoring plugin. For example, in Nagios:
In the fast-paced world of enterprise IT and managed hosting, email deliverability remains a cornerstone of professional communication. For administrators working with HMC (Hosting Mail Control) systems—particularly legacy or customized versions—tools like the HMC Mail Checker 22 have become indispensable. hmc mail checker 22
hmc-mail-checker22 --queue-scan --domain contoso.com --verbose hmc-mail-checker22 --full-report --output hmc-report-$(date +%Y%m%d).html This generates an HTML report with charts on queue growth, average delivery time, and SPF success rate. Interpreting Common Output Codes When you run hmc-mail-checker22 , you will see exit codes and status messages. Here is a quick reference: hmc-mail-checker22 --queue-scan --domain contoso
Download the latest release from the official HMC repository, run a full report on your primary domain tonight, and set up a weekly cron job. Your future self—and your users—will thank you when email flows smoothly. Have a specific question about HMC Mail Checker 22? Check the official documentation at /usr/share/doc/hmc-mail-checker22/README.md or join the HMC Administrator community forum. Your future self—and your users—will thank you when
| Code | Message | Meaning | Action | | :--- | :--- | :--- | :--- | | 0 | SUCCESS: Delivery confirmed | Test passed | None needed | | 2 | WARN: Deferred (4xx) | Remote server temporarily unavailable | Check remote MX logs | | 5 | ERROR: Authentication failed (535) | Bad password or broken SASL | Reset password; check /etc/sasl2/hmc.conf | | 10 | CRIT: HMC queue lock detected | Stale lock file in /var/lock/hmc/ | Run hmc-mail-checker22 --clear-locks | | 14 | DKIM signature invalid | DNS record mismatch or body modified | Re-sign with correct selector | A frequent user complaint is the command not found error after installation. This usually occurs because the binary is not in $PATH . In HMC 22, the installer places the binary in /opt/hmc/bin/ .
0 */6 * * * /usr/local/bin/hmc-mail-checker22 --domain contoso.com --quick-test || echo "HMC Mail Check failed at $(date)" | mail -s "HMC 22 Alert" admin@contoso.com | Feature | HMC Mail Checker 22 | MXToolbox (Web) | Swaks | | :--- | :--- | :--- | :--- | | HMC queue integration | Yes | No | No | | HMC authentication backend (MySQL) | Yes | No | No | | Cost | Free (with HMC license) | Freemium | Free | | IPv6 toggle | Yes (--prefer-ipv6) | Limited | Yes | | Reports HMC deferred reasons | Yes (e.g., "rate limit exceeded") | No | No |