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Spam filter for own use
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Spam filter for own use

Hello,

I have some Email Accounts running with different providers, where the spam rate is sadly high. For some reason, mark the emails as spam, doesn't finish the task, they come back by different adresses or with higher daily rates.

Well, i tell directly, they got pawned years ago by some breaches you know, with millions of user accounts.
The mail passes have been changed many times now, so it should be save. But the spam won't stop.

Maybe there's a Tool to catch all like spamassassin does and deletes them before they arrive in my inbox.

Comments

  • MaouniqueMaounique Host Rep, Veteran
    edited March 2023

    @ascicode said: Maybe there's a Tool to catch all like spamassassin does and deletes them before they arrive in my inbox.

    Use own mail server on a VPS somewhere. SME Server has great mailing abilities and you can granularly control the spam vs false positive ratios.

    https://wiki.koozali.org/Main_Page

    The best thing? Is secure and very easy to maintain.

  • jarjar Patron Provider, Top Host, Veteran

    If you use a middle man, like a service, you have to configure your server to accept all email from it (basically disabling all spam filtering on your server). So be slow to just grab a third party service to sit in front of your mail server unless you are able/ready to make those changes (likely as root) on your mail servers.

  • FatGrizzlyFatGrizzly Member, Host Rep

    @ascicode said:
    Hello,

    I have some Email Accounts running with different providers, where the spam rate is sadly high. For some reason, mark the emails as spam, doesn't finish the task, they come back by different adresses or with higher daily rates.

    Well, i tell directly, they got pawned years ago by some breaches you know, with millions of user accounts.
    The mail passes have been changed many times now, so it should be save. But the spam won't stop.

    Maybe there's a Tool to catch all like spamassassin does and deletes them before they arrive in my inbox.

    Yes. Checkout mxguarddog.com

  • Maybe you dont use a dnsbl to filter out the spam?

  • To include a detail: Not my server, its a 3rd party mail hoster like google or so.
    I try to filter by adresses or names, but yeah, changed daily.
    Its hard to filter from gmail/outlook adresses without delete save ones.

  • winerwiner Member

    if your have mail server, try use this list https://github.com/liuxyon/iplist/blob/main/mailblock.txt

  • jarjar Patron Provider, Top Host, Veteran

    @ascicode said:
    To include a detail: Not my server, its a 3rd party mail hoster like google or so.
    I try to filter by adresses or names, but yeah, changed daily.
    Its hard to filter from gmail/outlook adresses without delete save ones.

    In that case look for some kind of post-filter. Like this: https://www.cleanfox.io/

    That way you don’t break SPF of inbound emails by proxying them.

  • iqbaliqbal Member

    @Maounique said:

    @ascicode said: Maybe there's a Tool to catch all like spamassassin does and deletes them before they arrive in my inbox.

    Use own mail server on a VPS somewhere. SME Server has great mailing abilities and you can granularly control the spam vs false positive ratios.

    https://wiki.koozali.org/Main_Page

    The best thing? Is secure and very easy to maintain.

    wow! i was using this distro (e-smith) back in 2000-2003 and they still exist!

  • MaouniqueMaounique Host Rep, Veteran

    @iqbal said: wow! i was using this distro (e-smith) back in 2000-2003 and they still exist!

    Yeah, but pretty dated. No IPv6 to this day...
    Still, very easy to maintain, low resources needed, just need a non-blacklisted provider and there you go. Has integrated spam filter with good granularity.

  • tentortentor Member, Patron Provider
    edited March 2023

    @winer said:
    if your have mail server, try use this list https://github.com/liuxyon/iplist/blob/main/mailblock.txt

    As I can see from repository description, it is something like Spamhaus PBL + SBL. Isn't it much more convenient just to stick with their free DNSBL?

    Anyway I don't think that pure IP block is really efficient, I more like the idea of Distributed Checksum Clearinghouses. Basically they are collecting fuzzy hashes to detect bulk mailing, which is, as far as I know, is pretty efficient even when spammer uses not previously abused IP addresses

    Thanked by 10xC7
  • winerwiner Member

    @tentor said:

    @winer said:
    if your have mail server, try use this list https://github.com/liuxyon/iplist/blob/main/mailblock.txt

    As I can see from repository description, it is something like Spamhaus PBL + SBL. Isn't it much more convenient just to stick with their free DNSBL?

    Anyway I don't think that pure IP block is really efficient, I more like the idea of Distributed Checksum Clearinghouses. Basically they are collecting fuzzy hashes to detect bulk mailing, which is, as far as I know, is pretty efficient even when spammer uses not previously abused IP addresses

    This mailblock spam ip list is collected independently, without using any third-party data.
    It also includes any behavior ip records for mail server hacks. And the dynamic ip range of China, as well as the frequent abuse of ip ranges in Africa and India are all recorded. So this list can be very good for renting most of the abused ip ranges. Mainly used in firewall blocking its. Effectively mitigates disruption to mail servers.

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