diff --git a/Blogs-and-tutorials.md b/Blogs-and-tutorials.md
index 66fc339..8ef1ddf 100644
--- a/Blogs-and-tutorials.md
+++ b/Blogs-and-tutorials.md
@@ -40,6 +40,7 @@ Here are some blogs that may help you:
 1. https://east.fm/posts/acme-sh-cpanel-a2hosting/index.html
 1. https://tryingtobeawesome.com/encryptdaddy/
 1. [Let's Encrypt certificates on Synology DSM 5](http://blog.raorn.name/2017/02/lets-encrypt-certificates-on-synology.html)
+1. https://forums.zimbra.org/viewtopic.php?t=60781
 1. https://www.ollegustafsson.com/en/letsencrypt-routeros/
 1. https://kralik.io/2016/11/26/how-easy-is-to-use-https-with-lets-encrypt-and-acme-sh/
 1. https://www.juliogonzalez.es/lets-encrypt-ssl-certificates-at-cpanel-without-native-support-for-example-at-namecheap/352