Update whitelist.txt

hosts/whitelist.txt

@@ -1,6 +1,9 @@
 ## This whitelist maintaince by @ookangzheng
 ## Attribution-NonCommercial 4.0 International (CC BY-NC-SA 4.0)
 
+# Postmark mail tracking unsubscribe link https://postmarkapp.com/support/article/1059-what-is-pstmrk-it
+subscriptions.pstmrk.it
+
 # IPv4 arpa
 ipv4only.arpa
 
@@ -15,16 +18,10 @@ opera-mini.net
 opera.software 
 op-cdn.net
 
-# crypt.ee
-s-usc1c-nss-262.firebaseio.com # fix firebase websocket cuz login issue
-
 # Microsoft
 activity.windows.com # brake Authenticator backup function
 continuum.dds.microsoft.com # Connect your phone to Microsoft windows
 
-localbitcoins.com
-www.localbitcoins.com
-
 infowars.com  #dingdong
 zerohedge.com #dingdong
 
@@ -33,11 +30,6 @@ ftp.tsukuba.wide.ad.jp
 # Nokia image asset 
 d3orhvfyxudxxq.cloudfront.net # CNAME images.ctfassets.net
 
-# Site assets for realpython.onfastspring.com
-d1f8f9xcsvx3ha.cloudfront.net
-
-# amazon.de
-djvbdz1obemzo.cloudfront.net # CNAME 
 
 # wangbase.com 阮一峰
 www.wangbase.com
@@ -99,11 +91,6 @@ s.yimg.com
 # printsrc
 image.prntscr.com
 
-# Sina.cn
-wx1.sinaimg.cn
-wx2.sinaimg.cn
-wx3.sinaimg.cn
-
 # Giphy / Instagram GIF use this
 limited-prod.giphy.map.fastly.net
 api.giphy.com