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3rd party spam filtering
We use O365 for our email. About 10 mailboxes. We moved from Gmail ages ago to get Teams, Sharepoint etc., and I'm actually regretting the move because Teams and Sharepoint don't fit us at all, and Gmail's inbuilt spam filtering was really good.
Anyhoo, it's too much effort to move from O365 now. We've been using Spam Hero for the past few months and while it's better than O365, it's not great either. Can anyone recommend a better 3rd party spam filtering service? We can pay for something, cloud or self hosted, but we can't spend the thousands that the likes of Cisco IronPort would demand.
Comments
Can you better explain the things that you think are lacking? The company I work for offers SpamTitan based filtering (which I think does pretty well), however, I do not know if that is actually going to be any better/ worse than 'Spam Hero' as I have never heard of or used it. If it's something you would be interested in testing out, though, drop me a PM and I am happy to get you some more information.
Cheers!
I can't, but I am tagging @eol. Maybe he can
Spam Hero gets almost all of the phishing emails, all of the Viagra emails etc. It misses most of the "cold outreach" emails though, i.e. the ones where spammers buy data and put it through something like Lemlist to send semi-customised junk, or just add the list of their Mailchimp account.
I used to block Mailchimp's IP range altogether but nowadays I'm guessing that you'd also block Mandrill emails if you did that.
Thanks.
Got you fam, you are welcome
Hey there,
We offer inbound spam filtering. No migration needed. Please contact me
Edit: Lazy ass. Its powered by MailChannels and I assure you its good.
Thing is those appliances are mostly using Bayesian filtering algorithms, to determine if the content seen is spam or not. On SpamTitan there is a numerical value system that can be assigned to a domain, much like Spamassassin would use and you can make it more or less strict about what it blocks. However, the issue in your case sounds more like spammers which are gaming the system. Much like when an e-mail account with valid DKIM/SPF is hacked and used to send out spam until the account is found spamming or until a specific pattern is detected by the filtering appliance (read volume of the same e-mail) to be abusive. Until it determines it is abusive, it will generally let a good amount of them through first. Whats worse is if the spammer then rotates accounts with valid information and changes the contents up a bit, you could again see them getting through until the new pattern is detected.
The reason Gmail filtering and similar services work so much better for these types of spam e-mail, is because instead of the system using an algorithm specifically to determine abusive e-mails, the user base is usually very fast to report the e-mail as spam in GMail (using the spam button) and then they utilize the report to train their filtering system. Most independent 3rd party platforms can't really offer this.
So while I would like to tell you there is a solution for what your seeing with a 3rd party product, I would almost guess it will be very similar on all of them, without a way to leverage user feedback like Gmail does.
Still, if you would like to test out SpamTitan (Trial) let me know and we can set something up for you so you can see how it works.
my 2 cents.
Cheers
I would suggest something like https://www.spamexperts.com/. There filters are pretty nice. I can buy the licenses pretty cheap trough my wholesaler. PM of you need any to try out.
edit:
looking at the prices its much cheaper then spamhero. You will like the pricing.
@TheLinuxBug
Unfortunately it seems to be just Google though. O365 also has a huge user base and the spam filtering is much worse than Spam Hero!
looking at the prices its much cheaper then spamhero. You will like the pricing.
@rovox Openprovider?
ssst trade secret, but yea openprovider.
The spam filtering on Hotmail is the same hopeless compared to Gmail I think Microsoft uses the same crap spam filtering on all their email services free or paid, on my outlook account Microsoft own mail and other legit sender end up in junk often and Viagra emails seem to get guarantee inbox.
A quick look at incoming spam filtering found a cheap option MX Guarddog the pricing is $0.25 month per inbox I've not personally used it so it might not be any better then your current setup.
Per mailbox? that ain't cheap
I know it's not cheap if you got 1000's of inboxes in that case a service that dose per domain priceing works out better but @jh says its only "About 10 mailboxes. " in that case $2.50 a month is not that high.
Yea okay true about that.
I've been trying Spam Experts for about 24 hours now and it seems to be spot on so far. Control panel is functional but rather annoying but I can live with that. It costs peanuts until you hit 1000 mailboxes on a domain (via Openprovider). I don't see that happening anytime soon at our company.
I also did some digging through MailChimp junk and set O365 to block any mail with the X-MC-User header that's present on all of their mail, which should take care of another big chunk of spam.
Been using Spam Experts since Jan. Definitely better than Spam Hero but still too much crap getting through. Honestly, how does a filter think an email with the subject "Best SEO Proposal" is anything but spam?
Does anyone have any other suggestions? Don't mind paying a bit more especially if it's an owned licence and can do split delivery.
It simply does not think at all. That's why we call them algorithms and filters.
Have you changed the settings to make it more aggressive?
SpamTitan, you can customise a huge amount, 4 years in now and tried lots of others and this just works for us..
No one tried rspamd?
From their website: "Rspamd runs significantly faster than SpamAssassin while providing approximately the same quality of filtering".
Nothing to get excited about imho.
Can it do split delivery?
Yep, delivery options can be from various ip’s on the nic or via another smtp host, splitting domains to deliver over different ip’s is great, you can even deliver to a specific host via rules.
We tried loads over the years and are happy with it, support are great too.
Downsides, av is bitdefender which I’m not a fan of, and the cluster option was not great, this will have changed though as we stopped using it years back, we cluster using vm’s on the backend so didn’t bother us.