Add tags to TLSA post.

content/posts/2024/dane-tlsa-record-for-letsencrypt/index.md

@@ -10,8 +10,9 @@ ShowLastmod: true
 toc: true
 scrolltotop: true
 tags:
+  - email
   - server
-  - certificate
+  - security
 ---
 
 I have been operating my own mail server for some 10 years. Recently, some