Install a Sectigo Domain Validation SSL certificate in Zimbra

We usually get the below four files from Sectigo in the certificate bundle. The file name may vary depending on the certificate type

  1. yourdomain.com.crt – main certificate
  2. AAACertificateServices.crt – Root Certificate
  3. USERTrustRSAAAACA.crt – Intermediate Certificate – 1
  4. SectigoRSADomainValidationSecureServerCA.crt – Intermediate Certificate – 2

Step 1: We shall create two files as below.

commercial_ca.crt (includes root certificate and two intermediate certificates)
commercial.crt (includes main certificate, root certificate and two intermediate certificates)

Step 2: Login to Zimbra server, move to directory /opt/zimbra/ssl/zimbra/commercial and create two files as below.

root@mail:~# cd /opt/zimbra/ssl/zimbra/commercial/
root@mail:/opt/zimbra/ssl/zimbra/commercial# touch commercial_ca.crt
root@mail:/opt/zimbra/ssl/zimbra/commercial# touch commercial.crt

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