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Spam domains that plague my email

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21–30 of 68 posts

Re: Spam domains that plague my email

#21
post #10
post #9

Earlier quoted context omitted.

I mark email from someone spam over and over, and it can still get past Gmail. It's infuriating.

Create a custom filter in Gmail to delete it; let it bypass the inbox and go straight to trash. (There's a "Filter messages like these" option somewhere)

Your fix is essentially "roll your own spam filter"

Re: Spam domains that plague my email

#22
post #8

These are usually domains that belong to a disposable email service, be it public or private. I maintain a 100% free API [1] to check if an email belongs to a disposable email service. We dogfood the same API endpoint to prevent users who abuse disposable emails to create fake accounts for free trial credits. We use the domains found at https://www.stopforumspam.com/downloads amongst other sources of data. Works pret…

I use a disposable email address because I don’t want the organization to have my email. Thank you for making that harder.

Re: Spam domains that plague my email

#23
post #8

These are usually domains that belong to a disposable email service, be it public or private. I maintain a 100% free API [1] to check if an email belongs to a disposable email service. We dogfood the same API endpoint to prevent users who abuse disposable emails to create fake accounts for free trial credits. We use the domains found at https://www.stopforumspam.com/downloads amongst other sources of data. Works pret…

What exactly is "fake" about an account one creates with a disposable email address?

Re: Spam domains that plague my email

#24
post #4

Surprised to not see gmail.com in the list[1]. [1]: https://drewdevault.com/2021/02/25/Gmail-is-a-huge-source-of... , https://news.ycombinator.com/item?id=26265329

When I self-hosted email I used Spamhaus to as a block list and Spam Assassin to filter the rest. Gmail users made up the biggest chunk of spam that got through but it was never from Google/Gmail domains, it was almost always from a Gmail user with a custom domain.

I wonder if SPF / DKIM / DMARC have improved this.

Google domains doesnt make it quite as easy as other hosting providers, and to be honest if they were super serious about email abuse they should encourage every domain to use it.

Re: Spam domains that plague my email

#25
post #8

These are usually domains that belong to a disposable email service, be it public or private. I maintain a 100% free API [1] to check if an email belongs to a disposable email service. We dogfood the same API endpoint to prevent users who abuse disposable emails to create fake accounts for free trial credits. We use the domains found at https://www.stopforumspam.com/downloads amongst other sources of data. Works pret…

> We dogfood the same API endpoint to prevent users who abuse disposable emails to create fake accounts for free trial credits.

Some people just want to watch the world burn.

Re: Spam domains that plague my email

#26
post #16

I am seeing Google constantly fail to catch obvious spam emails. At this point I suspect there is some institutional error on their part, where bad actors inside the org are allowing certain domains to simply not be spam filtered.

I've done some experiments with Gmail/Outlook/other spam detection clients on different types of spam/phishing etc. There's always someone who claims simple naive bayes algo would do better than Google. I'm not able to share the research data, but Gmail filter is a lot better than everything else you see on the market, especially when it's not a newsletter-like advertisement spam, but an actual phishing attack on Org…

Anecdotally, I have to say I rarely have issues with FastMail's spam filtering, which uses SpamAssassin (not sure what their setup is exactly of course). I rarely get spam in my inbox (maybe an email or two a month), and it almost never marks things as false positives (last one was years ago).

Re: Spam domains that plague my email

#27
post #20

Looks like a very personal list. I would not advice anyone using this as part of anything. Rohith[1] is in India and most of the spam domains (did a quick split) in the list are similar sounding names of a lot of Indian companies/Startups. Not that the companies do not spam (they do) but emails/domain registration has become so easy that there are tiny setups/operations in every nook and corner of the streets/chawls/…

You appear to be trying to argue against something, but it reads as "this is a lot of Indian stuff, which is chock-full of spammers". Read like that, it seems like the list is a good one.

Ah! I'm sorry if it came out wrong. However, I was trying to make an observation when I saw the list. You want to start optimizing your spam-block list or something like that and realized you are not typically the target. You might end up looking and scouting to hit something that never came your way.

My email(s) on my own domains has been on the Internet for more than two decades and I'm always happy to look at ways to prevent spam on them.

Re: Spam domains that plague my email

#28
post #8

These are usually domains that belong to a disposable email service, be it public or private. I maintain a 100% free API [1] to check if an email belongs to a disposable email service. We dogfood the same API endpoint to prevent users who abuse disposable emails to create fake accounts for free trial credits. We use the domains found at https://www.stopforumspam.com/downloads amongst other sources of data. Works pret…

Curious about how did you built this? Do you maintain an internal list of domains?

Re: Spam domains that plague my email

#29
post #16

Earlier quoted context omitted.

I've done some experiments with Gmail/Outlook/other spam detection clients on different types of spam/phishing etc. There's always someone who claims simple naive bayes algo would do better than Google. I'm not able to share the research data, but Gmail filter is a lot better than everything else you see on the market, especially when it's not a newsletter-like advertisement spam, but an actual phishing attack on Org…

Anecdotally, I have to say I rarely have issues with FastMail's spam filtering, which uses SpamAssassin (not sure what their setup is exactly of course). I rarely get spam in my inbox (maybe an email or two a month), and it almost never marks things as false positives (last one was years ago).

SpamAssasin does ok only on subset of spam emails.. The problem is that underlying model is not capable to differentiate fake email from your boss (unless it's really simple) VS many other external emails you get.

I guess you would still want that 2nd level of protection for your ORG with sensitive data even if some "please buy X" - spam emails are still getting in.

Ofc Google is also not ideal :)

Re: Spam domains that plague my email

#30
post #18
post #15

In theory one can set any domain to "from" field, what about actual servers that sent the spam? How many of those spam emails have unsubscribe and/or complaint headers?

In theory the domain you set the "From:" field to will have DMARC, DKIM and SPF set up and in theory the recipient that implements those protocols will discard your mail as sent from an unauthorized server.

And if you don't have at least DKIM + SPF, then you will not even reach any public provider's inbox.
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