Zimbra - Sccfd

su - zimbra zmprov modifyServer `zmhostname` -zimbraSSLUseLetSCrypt TRUE zmcontrol stop sccfd zmcontrol disable sccfd # on systemd: systemctl disable zimbra-sccfd To re-enable later:

zmcontrol stop sccfd zmcontrol start sccfd To trigger sccfd immediately (instead of waiting for next interval): zimbra sccfd

/opt/zimbra/libexec/acme-client -d yourdomain.com -v Cause: Too frequent checks or large cert chain. Fix: Increase ssl_sccfd_check_interval to 172800 (2 days). Issue 4: Certificate renewed but not deployed Fix: Manually reload proxy: zimbra sccfd

zmcontrol restart sccfd zmacmedomain list 7. Common Issues & Fixes Issue 1: sccfd not running after upgrade Fix: Re-enable Let's Encrypt integration: zimbra sccfd