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My email client is GMail. I have repeatedly marked emails from certain senders as spam. I have also set up filters to automatically delete emails with specific subjects or from specific senders. In spite of my filters, emails from some of the blocked senders make it into my Inbox, bypassing GMail's and my filters.

In a similar vein, I have set Iceweasel to block certain cookies through Preferences/Privacy/Exceptions. Not only do these cookies keep being left on my system but the "Block" is being changed to "Allow". Why is this happening?

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ha14
2014-12-28 07:30:36
To use a particular message to create a filterhttps://support.google.com/mail/answer/6579?hl=enmaybe to update iceweasel to the latest version
ha14
2014-12-31 10:18:55
You can report it for a fix check this one alsoIceweasel Latest update stealing bandwidth uselesslyhttps://lists.debian.org/debian-user/2014/12/msg00278.htmlchanging to another browser can be a solution
Susendeep.D
2014-12-28 07:20:19
If you create filter by domain,then it might work well in addition with subject name.See below for more information - When Gmail's Filters Aren't Enough: How to Tackle Spam on Your OwnRegarding Iceweasel,you can follow the instructions on the below link -Firefox && Iceweasel SecurityAlso,the below links can act as supplement or alternative to the above suggestion -Optimizing Iceweasel/Firefox for privacyUsing Firebug-Cookie Management