{"id":4155,"date":"2026-06-08T18:00:48","date_gmt":"2026-06-08T15:00:48","guid":{"rendered":"https:\/\/support.withsecure.com\/en\/?post_type=support_article&p=4155"},"modified":"2026-06-08T18:00:48","modified_gmt":"2026-06-08T15:00:48","slug":"missing-intermediate-certificate-in-msg","status":"publish","type":"support_article","link":"https:\/\/support.withsecure.com\/en\/support-articles\/missing-intermediate-certificate-in-msg\/","title":{"rendered":"Missing intermediate certificate in MSG"},"content":{"rendered":"

Issue:<\/h3>\n

Recipients of encrypted mails are receiving warnings about untrusted pages and\/or certificates when attempting to view messages.
Looking up the MSG address using an SSL checker gives the following type of reply:
"The certificate is not trusted in all web browsers. You may need to install an Intermediate\/chain certificate to link it to a trusted root certificate."<\/p>\n

Resolution:<\/h3>\n

The result from the SSL checker points to a missing intermediate certificate. This can be acquired from the Certificate Authority (CA) and added to the MSG server certificate using the instructions below:<\/p>\n

    \n
  1. Download the required intermediate certificate in PEM-format from your Certificate Authority<\/li>\n
  2. Download the MSG server-certificate in PEM-format from the\u00a0appliance web UI:\u00a0System -> Certificates -> Certificates<\/b>, use the Download…<\/b>-button to the right of the certificate<\/li>\n
  3. Open the PEM-file downloaded from the MSG-appliance in your text editor of choice<\/li>\n
  4. To the end of this file, add the content of the intermediate certificate PEM-file and save it as a new PEM-file<\/li>\n
  5. Import the new certificate file into the MSG-appliance:\u00a0System -> Certificates -> Certificates<\/b>, use the Import<\/b>-button above the certificate list<\/li>\n
  6. Take the new combined certificate in use by distributing it to the master and agent(s):\u00a0System -> Certificates -> Services<\/b><\/li>\n<\/ol>\n","protected":false},"excerpt":{"rendered":"

    Recipients of encrypted mails are receiving warnings about untrusted pages\/certificates when attempting to view messages.
    The SSL Checker at\u00a0https:\/\/www.sslshopper.com\/ssl-checker.html<\/a> gives the following result when looking up the MSG address:
    “The certificate is not trusted in all web browsers. You may need to install an Intermediate\/chain certificate to link it to a trusted root certificate.<\/p>\n","protected":false},"template":"","support_article_product":[106],"class_list":["post-4155","support_article","type-support_article","status-publish","hentry"],"acf":{"source_foreign_id":"000005653","source_version":3,"source_system":"salesforce","source_date_updated":"2026-06-08 15:00:48","import_hash":"0efd4ffbf2cd97d5dd5b752c1aea095c3b0ba6a0","vanilla_article_id":31175,"vanilla_url":"https:\/\/community.withsecure.com\/en\/kb\/articles\/31175-missing-intermediate-certificate-in-msg","vanilla_kb_id":30,"vanilla_category_id":103,"machine_translated":false,"reactions_helpful_yes":0,"reactions_helpful_no":0},"_links":{"self":[{"href":"https:\/\/support.withsecure.com\/en\/wp-json\/wp\/v2\/support_article\/4155","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/support.withsecure.com\/en\/wp-json\/wp\/v2\/support_article"}],"about":[{"href":"https:\/\/support.withsecure.com\/en\/wp-json\/wp\/v2\/types\/support_article"}],"wp:attachment":[{"href":"https:\/\/support.withsecure.com\/en\/wp-json\/wp\/v2\/media?parent=4155"}],"wp:term":[{"taxonomy":"support_article_product","embeddable":true,"href":"https:\/\/support.withsecure.com\/en\/wp-json\/wp\/v2\/support_article_product?post=4155"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}