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spam

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New Poster

spam

How does Comcast handle spam?

Accepted Solution

Re: spam

They use a system of filters similar to what other email providers use.  They base them on known sources known in the industry like Spamhaus and others.  They are also influenced by how individuals mark something as Spam, depending on how many people use that feature.

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Email Expert

Re: spam

They use a system of filters similar to what other email providers use.  They base them on known sources known in the industry like Spamhaus and others.  They are also influenced by how individuals mark something as Spam, depending on how many people use that feature.




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Regular Visitor

Re: spam

well it's not working.  huge increase in spam that started a few months ago.

Email Expert

Re: spam

Some people get a lot of junk mail, while others get little or none.  I almost never get Spam in my Comcast accounts.  My Yahoo account gets truckloads of it every day.  Their junk filters catch most of it, but still, it has to be looked at to make sure nothing legitimate got snagged.  You will find these two articles of interest-----------------

 

http://ask-leo.com/im_drowning_in_spam_what_can_i_do.html

and

https://askleo.com/stopping-spam-harder-think/?awt_l=E37kF&awt_m=In.RoL7ub3dfbL




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Regular Visitor

Re: spam

Yes, I noticed this as well. Huge increase in spam..

New Poster

Re: spam

THIS IS NOT THE LEAST BIT SOLVED.

 

I've noticed a huge increase in spam in one of my Comcast.net accounts.

 

I vaguely recall Comcast announcing some months ago that it's installed a new system for controlling spam.

 

I agree, THIS IS NOT WORKING.

 

I just got off a long, frustrating phone call with Comcast Security, which handles spam complaints (888-565-4329). The supervisor I talked to said 1) They're doing the best they can; 2) If I want to further reduce the spam, I have to set up filters in their crappy Comcast.net e-mail software (which is very lame as far as setting up filters is concerned).

 

Other than that, Comcast takes no further responsibility for managing the spam that comes into your comcast.net e-mail account. The supervisor seemed very uninterested in providing feedback about deficiencies in Comcast's spam filtering to upper management.

 

So, in sum, a typical Comcast reaction. You get C- service from Comcast, shut up and be happy with your Internet provider monopoly.

New Poster

Re: spam

I am getting 3-4 foreign spam messages per day. Not sure why Comcast can't filter these out and keep them from appearing in my mailbox. My spam filter on the computer catches many of them after I train it, but these messages, mostly French, keep changing enough so that I can't avoid them altogether and must manually delete them. Please, Comcast, find a way to filter these foreign spams.

New Poster

Re: spam

I've been tuning spam in both comcast's webmail and on my macs.  Only my macs are flagging the spam and thus I keep getting the same kinds of spam on my phone.

 

Seems like a desktop spam filter is better than Comcast's.  While I have very little end users, Comcast has millions.  However, it's pretty easy to spot the patterns in these messages, and clearly Comcast needs to step up to improve the logic of the tools or get some better ones.

 

I may have to start looking at ways to route all email to another email server that I control that can do a better job...

Email Expert

Re: spam


RealityDysfunct wrote:

 

-----------------------------------------

 

I may have to start looking at ways to route all email to another email server that I control that can do a better job...


You might want to look at this then------------------

 

https://askleo.com/how_do_i_route_my_email_through_gmail/

 

Supposedly the Gmail filtering is better.




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New Poster

Re: spam

I figured out a simpler solution using Comcast's tools: Email Filters

 

1) Navigate to comcast's web mail after you login by clicking the Mail envelope icon in the upper right

2) Click Preferences above the Inbox messages, directly above "Spam" and "Move"

3) You should now be in the "XFINITY Connect Preferences" -> Click on the larger EMail envelope icon in the middle of the screen

4) About halfway down the list, you should see a link for "Email Filters".  Click that link.

5) In the popup window, click "Add Filter"

6) Give the filter a name, "Custom Spam Filter 1", Ensure "Active" checkbox is selected, Ensure the radial button is selected for " of the following conditions are met: "

7) Change "From" to "Body", leave "Contains" as is.  For now, leave the text box where you will put what to look for blank, we'll get back to that.

8) Under "Perform the Following Actions", change from "Keep in Inbox" to "File into Folder".  Then click "Inbox" to the right and select "Spam"

9) Now, when you initiallly clicked the Preferences then Email Filters, it should have forked off a new browser tab.  Go and click on one of the original tabs.

10) Navigate back to your inbox if you need to. If you've already marked emails as SPAM, go to your spam folder.

11) Check the box next to one of the spam emails, then click "Actions" in the upper right menu, with the down Arrow (it is right of the SPAM/NOT SPAM button)

12) Select "View Source" from the Actions button.  This will be below the "Mark as Read" and "Mark as Unread" menu options.

13) A new window will pop up with the plain text of the spam message.  scroll down past the "This message was sent to ..." and your email address should be there.

14) Go a little further past the content-type lines and you should now be in the body of the spam message.

15) Do the same for another recent spam message.  Put the two windows side-by-side and eye ball two things that are common to each spam message. 

16) I'm finding that while you may get a variety of spam, they seem to be from the same or very few spammers.  Thus, the message bodies have similarities that you can use to 'fingerprint' them.

17) Some good things to look for would be the line that has the font in it.  Avoid special characters as the comcast filter won't take those.

a)  This is a good choice for the first pattern with the html font line:

font-family: Arial; font-size: 12pt; color: #000000

b) Look at the links that that hide behind the images, sometimes you may find something unique in the domain name, but often they change every spam email.  So they're not a good choice. 

a href="http://Hx8tRF.plixclass.com\/5X3t3qYxpzUd2nDd.S/BN

I found a bunch that were putting "dots" behind the ".com", with a port :80   "plixclass.com.:80\/".  That is unique, as i've never seen dots at the end of domain names.  Adding the colon and port makes for a good 2nd string match: ".:80"

a href="http://Hx8tRF.plixclass.com.:80\/5X3t3qYxpzUd2nDd.S/BN

 In other cases, I see they were putting various "faces": below, see the "*.*"

 

<br>
*.*<img src="http://11rPuXaMwrz600.plixclass.com

 or here, see the "=}"

<br>
=}<img src="http://L7TkrPEB6uEJ.my-little-computer.com

 You'll notice those show up in the picture part of the email as well.  So you could always start there to see their "tramp stamp".

 

Now, you could use something like ".:80" by itself as it is very very unusual, or you could go with a combination of two or more strings.  The more strings you specify with a "match all", the more likely you'll get a good match.  However, too specific to that spam and you may not match another spam message.  That's why it is good to look at a variety of spam.

 

So go back to your spam filter window and put in your strings to match on in the text box to the right of 'contains'.  Note, if you go with more than one match per filter, click the "Add" button to add another row to enter your 2nd string to match on.  From the above examples, I would go with the html font line, plus one of the 'faces'.

 

In this case, I created 3 customer filters:

1) .:80

2) html font line   plus  *.*

3) html font line   plus  =}

 

As 2) and 3) were clearly the same spammers.  1) also looked like the same people, but their domain choices were unique enough.

 

This is a cat and mouse game.  If they know that you know what to focus in on, they'll change up their message bodies a little to try to get past your filters.

That's ok, they often use some form of automation to auto-generate the spam messages, and that automation lends itself to fingerprinting the commonalities.

 

Don't be discouraged if you have to create a dozen or more filters, as they may code in many more variations.  Happy hunting!

New Poster

Re: spam

Problem is, their mail filters don't seem to be working...